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Finding the Fourth Proportional to 71,250.30, 98,332.11 and 42,570

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Solution

The fourth proportional to 71,250.30, 98,332.11 and 42,570 is: 58,750.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,250.30 : 98,332.11 = 42,570 : x
  2. Step 2: Convert to fraction form
    71,250.30/98,332.11 = 42,570/x
  3. Step 3: Cross multiply
    71,250.30x = 98,332.11 × 42,570
  4. Step 4: Simplify right side
    71,250.30x = 4,185,997,922.70
  5. Step 5: Solve for x
    x = 4,185,997,922.70/71,250.30
  6. Step 6: Final answer
    x = 58,750.60

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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.