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Finding the Fourth Proportional to 71,642.30, 98,874.95 and 41,437.40

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Solution

The fourth proportional to 71,642.30, 98,874.95 and 41,437.40 is: 57,188.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,642.30 : 98,874.95 = 41,437.40 : x
  2. Step 2: Convert to fraction form
    71,642.30/98,874.95 = 41,437.40/x
  3. Step 3: Cross multiply
    71,642.30x = 98,874.95 × 41,437.40
  4. Step 4: Simplify right side
    71,642.30x = 4,097,120,151.57
  5. Step 5: Solve for x
    x = 4,097,120,151.57/71,642.30
  6. Step 6: Final answer
    x = 57,188.57

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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.