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Finding the Fourth Proportional to 85,446.60, 117,915.52 and 47,206.08

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Solution

The fourth proportional to 85,446.60, 117,915.52 and 47,206.08 is: 65,143.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,446.60 : 117,915.52 = 47,206.08 : x
  2. Step 2: Convert to fraction form
    85,446.60/117,915.52 = 47,206.08/x
  3. Step 3: Cross multiply
    85,446.60x = 117,915.52 × 47,206.08
  4. Step 4: Simplify right side
    85,446.60x = 5,566,329,470.36
  5. Step 5: Solve for x
    x = 5,566,329,470.36/85,446.60
  6. Step 6: Final answer
    x = 65,143.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.