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Finding the Fourth Proportional to 88,919.40, 133,532.70 and 47,447.40

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Solution

The fourth proportional to 88,919.40, 133,532.70 and 47,447.40 is: 71,253.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,919.40 : 133,532.70 = 47,447.40 : x
  2. Step 2: Convert to fraction form
    88,919.40/133,532.70 = 47,447.40/x
  3. Step 3: Cross multiply
    88,919.40x = 133,532.70 × 47,447.40
  4. Step 4: Simplify right side
    88,919.40x = 6,335,779,429.98
  5. Step 5: Solve for x
    x = 6,335,779,429.98/88,919.40
  6. Step 6: Final answer
    x = 71,253.06

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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.