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Finding the Fourth Proportional to 91,308.92, 125,940.93 and 64,091.10

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Solution

The fourth proportional to 91,308.92, 125,940.93 and 64,091.10 is: 88,399.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,308.92 : 125,940.93 = 64,091.10 : x
  2. Step 2: Convert to fraction form
    91,308.92/125,940.93 = 64,091.10/x
  3. Step 3: Cross multiply
    91,308.92x = 125,940.93 × 64,091.10
  4. Step 4: Simplify right side
    91,308.92x = 8,071,692,262.24
  5. Step 5: Solve for x
    x = 8,071,692,262.24/91,308.92
  6. Step 6: Final answer
    x = 88,399.82

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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.