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Finding the Fourth Proportional to 60,302.40, 90,379.20 and 43,719.36

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Solution

The fourth proportional to 60,302.40, 90,379.20 and 43,719.36 is: 65,525.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,302.40 : 90,379.20 = 43,719.36 : x
  2. Step 2: Convert to fraction form
    60,302.40/90,379.20 = 43,719.36/x
  3. Step 3: Cross multiply
    60,302.40x = 90,379.20 × 43,719.36
  4. Step 4: Simplify right side
    60,302.40x = 3,951,320,781.31
  5. Step 5: Solve for x
    x = 3,951,320,781.31/60,302.40
  6. Step 6: Final answer
    x = 65,525.10

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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.