Home / 79,170.12-109,265.04-45,170.76

Finding the Fourth Proportional to 79,170.12, 109,265.04 and 45,170.76

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Solution

The fourth proportional to 79,170.12, 109,265.04 and 45,170.76 is: 62,341.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,170.12 : 109,265.04 = 45,170.76 : x
  2. Step 2: Convert to fraction form
    79,170.12/109,265.04 = 45,170.76/x
  3. Step 3: Cross multiply
    79,170.12x = 109,265.04 × 45,170.76
  4. Step 4: Simplify right side
    79,170.12x = 4,935,584,898.23
  5. Step 5: Solve for x
    x = 4,935,584,898.23/79,170.12
  6. Step 6: Final answer
    x = 62,341.51

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Half scale
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Double scale
Find fourth proportional to 79,171.12, 109,266.42 and 45,171.76
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.