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Finding the Fourth Proportional to 85,156.46, 117,517.05 and 47,430.71

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Solution

The fourth proportional to 85,156.46, 117,517.05 and 47,430.71 is: 65,455.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,156.46 : 117,517.05 = 47,430.71 : x
  2. Step 2: Convert to fraction form
    85,156.46/117,517.05 = 47,430.71/x
  3. Step 3: Cross multiply
    85,156.46x = 117,517.05 × 47,430.71
  4. Step 4: Simplify right side
    85,156.46x = 5,573,916,531.02
  5. Step 5: Solve for x
    x = 5,573,916,531.02/85,156.46
  6. Step 6: Final answer
    x = 65,455.01

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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.