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Finding the Fourth Proportional to 71,323.90, 98,425.83 and 39,492.70

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Solution

The fourth proportional to 71,323.90, 98,425.83 and 39,492.70 is: 54,499.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,323.90 : 98,425.83 = 39,492.70 : x
  2. Step 2: Convert to fraction form
    71,323.90/98,425.83 = 39,492.70/x
  3. Step 3: Cross multiply
    71,323.90x = 98,425.83 × 39,492.70
  4. Step 4: Simplify right side
    71,323.90x = 3,887,101,776.44
  5. Step 5: Solve for x
    x = 3,887,101,776.44/71,323.90
  6. Step 6: Final answer
    x = 54,499.29

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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.