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Finding the Fourth Proportional to 71,510.40, 98,678.88 and 41,281.92

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Solution

The fourth proportional to 71,510.40, 98,678.88 and 41,281.92 is: 56,965.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,510.40 : 98,678.88 = 41,281.92 : x
  2. Step 2: Convert to fraction form
    71,510.40/98,678.88 = 41,281.92/x
  3. Step 3: Cross multiply
    71,510.40x = 98,678.88 × 41,281.92
  4. Step 4: Simplify right side
    71,510.40x = 4,073,653,629.85
  5. Step 5: Solve for x
    x = 4,073,653,629.85/71,510.40
  6. Step 6: Final answer
    x = 56,965.89

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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.