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Finding the Fourth Proportional to 71,666.84, 98,901.42 and 39,402.82

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Solution

The fourth proportional to 71,666.84, 98,901.42 and 39,402.82 is: 54,376.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,666.84 : 98,901.42 = 39,402.82 : x
  2. Step 2: Convert to fraction form
    71,666.84/98,901.42 = 39,402.82/x
  3. Step 3: Cross multiply
    71,666.84x = 98,901.42 × 39,402.82
  4. Step 4: Simplify right side
    71,666.84x = 3,896,994,850.00
  5. Step 5: Solve for x
    x = 3,896,994,850.00/71,666.84
  6. Step 6: Final answer
    x = 54,376.54

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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.