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Finding the Fourth Proportional to 65,793.72, 90,825.36 and 38,566.10

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Solution

The fourth proportional to 65,793.72, 90,825.36 and 38,566.10 is: 53,238.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,793.72 : 90,825.36 = 38,566.10 : x
  2. Step 2: Convert to fraction form
    65,793.72/90,825.36 = 38,566.10/x
  3. Step 3: Cross multiply
    65,793.72x = 90,825.36 × 38,566.10
  4. Step 4: Simplify right side
    65,793.72x = 3,502,779,916.30
  5. Step 5: Solve for x
    x = 3,502,779,916.30/65,793.72
  6. Step 6: Final answer
    x = 53,238.82

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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.