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Finding the Fourth Proportional to 52,129, 78,187.96 and 14,688.08

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Solution

The fourth proportional to 52,129, 78,187.96 and 14,688.08 is: 22,030.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,129 : 78,187.96 = 14,688.08 : x
  2. Step 2: Convert to fraction form
    52,129/78,187.96 = 14,688.08/x
  3. Step 3: Cross multiply
    52,129x = 78,187.96 × 14,688.08
  4. Step 4: Simplify right side
    52,129x = 1,148,431,011.52
  5. Step 5: Solve for x
    x = 1,148,431,011.52/52,129
  6. Step 6: Final answer
    x = 22,030.56

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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.