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Finding the Fourth Proportional to 97,456.71, 134,495.67 and 68,785.55

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Solution

The fourth proportional to 97,456.71, 134,495.67 and 68,785.55 is: 94,927.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,456.71 : 134,495.67 = 68,785.55 : x
  2. Step 2: Convert to fraction form
    97,456.71/134,495.67 = 68,785.55/x
  3. Step 3: Cross multiply
    97,456.71x = 134,495.67 × 68,785.55
  4. Step 4: Simplify right side
    97,456.71x = 9,251,357,961.09
  5. Step 5: Solve for x
    x = 9,251,357,961.09/97,456.71
  6. Step 6: Final answer
    x = 94,927.87

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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.