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Finding the Fourth Proportional to 71,369.52, 98,488.60 and 39,537.72

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Solution

The fourth proportional to 71,369.52, 98,488.60 and 39,537.72 is: 54,561.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,369.52 : 98,488.60 = 39,537.72 : x
  2. Step 2: Convert to fraction form
    71,369.52/98,488.60 = 39,537.72/x
  3. Step 3: Cross multiply
    71,369.52x = 98,488.60 × 39,537.72
  4. Step 4: Simplify right side
    71,369.52x = 3,894,014,689.99
  5. Step 5: Solve for x
    x = 3,894,014,689.99/71,369.52
  6. Step 6: Final answer
    x = 54,561.31

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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.