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Finding the Fourth Proportional to 91,597.92, 126,342.04 and 64,431.64

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Solution

The fourth proportional to 91,597.92, 126,342.04 and 64,431.64 is: 88,871.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,597.92 : 126,342.04 = 64,431.64 : x
  2. Step 2: Convert to fraction form
    91,597.92/126,342.04 = 64,431.64/x
  3. Step 3: Cross multiply
    91,597.92x = 126,342.04 × 64,431.64
  4. Step 4: Simplify right side
    91,597.92x = 8,140,424,838.15
  5. Step 5: Solve for x
    x = 8,140,424,838.15/91,597.92
  6. Step 6: Final answer
    x = 88,871.28

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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.