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Finding the Fourth Proportional to 84,902.94, 127,294.02 and 39,899.16

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Solution

The fourth proportional to 84,902.94, 127,294.02 and 39,899.16 is: 59,820.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,902.94 : 127,294.02 = 39,899.16 : x
  2. Step 2: Convert to fraction form
    84,902.94/127,294.02 = 39,899.16/x
  3. Step 3: Cross multiply
    84,902.94x = 127,294.02 × 39,899.16
  4. Step 4: Simplify right side
    84,902.94x = 5,078,924,471.02
  5. Step 5: Solve for x
    x = 5,078,924,471.02/84,902.94
  6. Step 6: Final answer
    x = 59,820.36

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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.