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Finding the Fourth Proportional to 84,480.30, 126,720.45 and 83,897.10

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Solution

The fourth proportional to 84,480.30, 126,720.45 and 83,897.10 is: 125,845.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,480.30 : 126,720.45 = 83,897.10 : x
  2. Step 2: Convert to fraction form
    84,480.30/126,720.45 = 83,897.10/x
  3. Step 3: Cross multiply
    84,480.30x = 126,720.45 × 83,897.10
  4. Step 4: Simplify right side
    84,480.30x = 10,631,478,265.70
  5. Step 5: Solve for x
    x = 10,631,478,265.70/84,480.30
  6. Step 6: Final answer
    x = 125,845.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.