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Finding the Fourth Proportional to 71,358, 98,477.28 and 39,526.89

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Solution

The fourth proportional to 71,358, 98,477.28 and 39,526.89 is: 54,548.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,358 : 98,477.28 = 39,526.89 : x
  2. Step 2: Convert to fraction form
    71,358/98,477.28 = 39,526.89/x
  3. Step 3: Cross multiply
    71,358x = 98,477.28 × 39,526.89
  4. Step 4: Simplify right side
    71,358x = 3,892,500,614.06
  5. Step 5: Solve for x
    x = 3,892,500,614.06/71,358
  6. Step 6: Final answer
    x = 54,548.90

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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.