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Finding the Fourth Proportional to 71,437.79, 107,149.14 and 29,322.30

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Solution

The fourth proportional to 71,437.79, 107,149.14 and 29,322.30 is: 43,980.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,437.79 : 107,149.14 = 29,322.30 : x
  2. Step 2: Convert to fraction form
    71,437.79/107,149.14 = 29,322.30/x
  3. Step 3: Cross multiply
    71,437.79x = 107,149.14 × 29,322.30
  4. Step 4: Simplify right side
    71,437.79x = 3,141,859,227.82
  5. Step 5: Solve for x
    x = 3,141,859,227.82/71,437.79
  6. Step 6: Final answer
    x = 43,980.36

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1.5x scale

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.