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Finding the Fourth Proportional to 79,166.40, 109,244.64 and 45,170.40

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Solution

The fourth proportional to 79,166.40, 109,244.64 and 45,170.40 is: 62,332.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,166.40 : 109,244.64 = 45,170.40 : x
  2. Step 2: Convert to fraction form
    79,166.40/109,244.64 = 45,170.40/x
  3. Step 3: Cross multiply
    79,166.40x = 109,244.64 × 45,170.40
  4. Step 4: Simplify right side
    79,166.40x = 4,934,624,086.66
  5. Step 5: Solve for x
    x = 4,934,624,086.66/79,166.40
  6. Step 6: Final answer
    x = 62,332.30

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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.