Home / 91,605.92-126,353.08-64,439.64

Finding the Fourth Proportional to 91,605.92, 126,353.08 and 64,439.64

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Solution

The fourth proportional to 91,605.92, 126,353.08 and 64,439.64 is: 88,882.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,605.92 : 126,353.08 = 64,439.64 : x
  2. Step 2: Convert to fraction form
    91,605.92/126,353.08 = 64,439.64/x
  3. Step 3: Cross multiply
    91,605.92x = 126,353.08 × 64,439.64
  4. Step 4: Simplify right side
    91,605.92x = 8,142,146,988.09
  5. Step 5: Solve for x
    x = 8,142,146,988.09/91,605.92
  6. Step 6: Final answer
    x = 88,882.32

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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.