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Finding the Fourth Proportional to 71,305.31, 98,401.33 and 39,476.26

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Solution

The fourth proportional to 71,305.31, 98,401.33 and 39,476.26 is: 54,477.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,305.31 : 98,401.33 = 39,476.26 : x
  2. Step 2: Convert to fraction form
    71,305.31/98,401.33 = 39,476.26/x
  3. Step 3: Cross multiply
    71,305.31x = 98,401.33 × 39,476.26
  4. Step 4: Simplify right side
    71,305.31x = 3,884,516,659.77
  5. Step 5: Solve for x
    x = 3,884,516,659.77/71,305.31
  6. Step 6: Final answer
    x = 54,477.24

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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.