Home / 79,130.76-109,209.23-45,147.63

Finding the Fourth Proportional to 79,130.76, 109,209.23 and 45,147.63

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Solution

The fourth proportional to 79,130.76, 109,209.23 and 45,147.63 is: 62,308.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,130.76 : 109,209.23 = 45,147.63 : x
  2. Step 2: Convert to fraction form
    79,130.76/109,209.23 = 45,147.63/x
  3. Step 3: Cross multiply
    79,130.76x = 109,209.23 × 45,147.63
  4. Step 4: Simplify right side
    79,130.76x = 4,930,537,908.62
  5. Step 5: Solve for x
    x = 4,930,537,908.62/79,130.76
  6. Step 6: Final answer
    x = 62,308.74

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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.