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Finding the Fourth Proportional to 58,456.08, 87,723.12 and 21,520.08

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Solution

The fourth proportional to 58,456.08, 87,723.12 and 21,520.08 is: 32,294.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,456.08 : 87,723.12 = 21,520.08 : x
  2. Step 2: Convert to fraction form
    58,456.08/87,723.12 = 21,520.08/x
  3. Step 3: Cross multiply
    58,456.08x = 87,723.12 × 21,520.08
  4. Step 4: Simplify right side
    58,456.08x = 1,887,808,560.25
  5. Step 5: Solve for x
    x = 1,887,808,560.25/58,456.08
  6. Step 6: Final answer
    x = 32,294.48

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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.