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Finding the Fourth Proportional to 71,215.40, 106,790.70 and 37,926.92

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Solution

The fourth proportional to 71,215.40, 106,790.70 and 37,926.92 is: 56,873.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,215.40 : 106,790.70 = 37,926.92 : x
  2. Step 2: Convert to fraction form
    71,215.40/106,790.70 = 37,926.92/x
  3. Step 3: Cross multiply
    71,215.40x = 106,790.70 × 37,926.92
  4. Step 4: Simplify right side
    71,215.40x = 4,050,242,335.64
  5. Step 5: Solve for x
    x = 4,050,242,335.64/71,215.40
  6. Step 6: Final answer
    x = 56,873.12

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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.