Home / 71,412.16-106,940.40-43,345.12

Finding the Fourth Proportional to 71,412.16, 106,940.40 and 43,345.12

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Solution

The fourth proportional to 71,412.16, 106,940.40 and 43,345.12 is: 64,909.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,412.16 : 106,940.40 = 43,345.12 : x
  2. Step 2: Convert to fraction form
    71,412.16/106,940.40 = 43,345.12/x
  3. Step 3: Cross multiply
    71,412.16x = 106,940.40 × 43,345.12
  4. Step 4: Simplify right side
    71,412.16x = 4,635,344,470.85
  5. Step 5: Solve for x
    x = 4,635,344,470.85/71,412.16
  6. Step 6: Final answer
    x = 64,909.74

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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.