Home / 91,007.10-136,474.20-31,812.30

Finding the Fourth Proportional to 91,007.10, 136,474.20 and 31,812.30

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Solution

The fourth proportional to 91,007.10, 136,474.20 and 31,812.30 is: 47,705.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,007.10 : 136,474.20 = 31,812.30 : x
  2. Step 2: Convert to fraction form
    91,007.10/136,474.20 = 31,812.30/x
  3. Step 3: Cross multiply
    91,007.10x = 136,474.20 × 31,812.30
  4. Step 4: Simplify right side
    91,007.10x = 4,341,558,192.66
  5. Step 5: Solve for x
    x = 4,341,558,192.66/91,007.10
  6. Step 6: Final answer
    x = 47,705.71

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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.