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Finding the Fourth Proportional to 71,437.76, 107,149.08 and 29,322.28

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Solution

The fourth proportional to 71,437.76, 107,149.08 and 29,322.28 is: 43,980.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,437.76 : 107,149.08 = 29,322.28 : x
  2. Step 2: Convert to fraction form
    71,437.76/107,149.08 = 29,322.28/x
  3. Step 3: Cross multiply
    71,437.76x = 107,149.08 × 29,322.28
  4. Step 4: Simplify right side
    71,437.76x = 3,141,855,325.50
  5. Step 5: Solve for x
    x = 3,141,855,325.50/71,437.76
  6. Step 6: Final answer
    x = 43,980.32

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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.