Home / 91,123.22-136,685.74-31,960.32

Finding the Fourth Proportional to 91,123.22, 136,685.74 and 31,960.32

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Solution

The fourth proportional to 91,123.22, 136,685.74 and 31,960.32 is: 47,940.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,123.22 : 136,685.74 = 31,960.32 : x
  2. Step 2: Convert to fraction form
    91,123.22/136,685.74 = 31,960.32/x
  3. Step 3: Cross multiply
    91,123.22x = 136,685.74 × 31,960.32
  4. Step 4: Simplify right side
    91,123.22x = 4,368,519,989.84
  5. Step 5: Solve for x
    x = 4,368,519,989.84/91,123.22
  6. Step 6: Final answer
    x = 47,940.80

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Similar ratio
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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.