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Finding the Fourth Proportional to 71,934.93, 99,267.92 and 39,670.91

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Solution

The fourth proportional to 71,934.93, 99,267.92 and 39,670.91 is: 54,744.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,934.93 : 99,267.92 = 39,670.91 : x
  2. Step 2: Convert to fraction form
    71,934.93/99,267.92 = 39,670.91/x
  3. Step 3: Cross multiply
    71,934.93x = 99,267.92 × 39,670.91
  4. Step 4: Simplify right side
    71,934.93x = 3,938,048,720.21
  5. Step 5: Solve for x
    x = 3,938,048,720.21/71,934.93
  6. Step 6: Final answer
    x = 54,744.60

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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.