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Finding the Fourth Proportional to 63,139.40, 94,785.90 and 47,433.80

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Solution

The fourth proportional to 63,139.40, 94,785.90 and 47,433.80 is: 71,208.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,139.40 : 94,785.90 = 47,433.80 : x
  2. Step 2: Convert to fraction form
    63,139.40/94,785.90 = 47,433.80/x
  3. Step 3: Cross multiply
    63,139.40x = 94,785.90 × 47,433.80
  4. Step 4: Simplify right side
    63,139.40x = 4,496,055,423.42
  5. Step 5: Solve for x
    x = 4,496,055,423.42/63,139.40
  6. Step 6: Final answer
    x = 71,208.40

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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.