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Finding the Fourth Proportional to 84,562.68, 126,818.70 and 53,020.68

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Solution

The fourth proportional to 84,562.68, 126,818.70 and 53,020.68 is: 79,515.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,562.68 : 126,818.70 = 53,020.68 : x
  2. Step 2: Convert to fraction form
    84,562.68/126,818.70 = 53,020.68/x
  3. Step 3: Cross multiply
    84,562.68x = 126,818.70 × 53,020.68
  4. Step 4: Simplify right side
    84,562.68x = 6,724,013,710.72
  5. Step 5: Solve for x
    x = 6,724,013,710.72/84,562.68
  6. Step 6: Final answer
    x = 79,515.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.