Home / 91,082.28-136,636.20-31,904.40

Finding the Fourth Proportional to 91,082.28, 136,636.20 and 31,904.40

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Solution

The fourth proportional to 91,082.28, 136,636.20 and 31,904.40 is: 47,861.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,082.28 : 136,636.20 = 31,904.40 : x
  2. Step 2: Convert to fraction form
    91,082.28/136,636.20 = 31,904.40/x
  3. Step 3: Cross multiply
    91,082.28x = 136,636.20 × 31,904.40
  4. Step 4: Simplify right side
    91,082.28x = 4,359,295,979.28
  5. Step 5: Solve for x
    x = 4,359,295,979.28/91,082.28
  6. Step 6: Final answer
    x = 47,861.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.