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Finding the Fourth Proportional to 71,437.76, 98,661.12 and 55,710.08

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Solution

The fourth proportional to 71,437.76, 98,661.12 and 55,710.08 is: 76,939.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,437.76 : 98,661.12 = 55,710.08 : x
  2. Step 2: Convert to fraction form
    71,437.76/98,661.12 = 55,710.08/x
  3. Step 3: Cross multiply
    71,437.76x = 98,661.12 × 55,710.08
  4. Step 4: Simplify right side
    71,437.76x = 5,496,418,888.09
  5. Step 5: Solve for x
    x = 5,496,418,888.09/71,437.76
  6. Step 6: Final answer
    x = 76,939.97

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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.