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Finding the Fourth Proportional to 71,302.93, 98,398.08 and 39,039.64

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Solution

The fourth proportional to 71,302.93, 98,398.08 and 39,039.64 is: 53,874.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,302.93 : 98,398.08 = 39,039.64 : x
  2. Step 2: Convert to fraction form
    71,302.93/98,398.08 = 39,039.64/x
  3. Step 3: Cross multiply
    71,302.93x = 98,398.08 × 39,039.64
  4. Step 4: Simplify right side
    71,302.93x = 3,841,425,619.89
  5. Step 5: Solve for x
    x = 3,841,425,619.89/71,302.93
  6. Step 6: Final answer
    x = 53,874.72

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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.