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Finding the Fourth Proportional to 85,440.60, 117,897.96 and 47,197.92

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Solution

The fourth proportional to 85,440.60, 117,897.96 and 47,197.92 is: 65,127.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,440.60 : 117,897.96 = 47,197.92 : x
  2. Step 2: Convert to fraction form
    85,440.60/117,897.96 = 47,197.92/x
  3. Step 3: Cross multiply
    85,440.60x = 117,897.96 × 47,197.92
  4. Step 4: Simplify right side
    85,440.60x = 5,564,538,484.24
  5. Step 5: Solve for x
    x = 5,564,538,484.24/85,440.60
  6. Step 6: Final answer
    x = 65,127.57

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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.