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Finding the Fourth Proportional to 91,434.68, 126,257.74 and 57,499.98

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Solution

The fourth proportional to 91,434.68, 126,257.74 and 57,499.98 is: 79,398.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,434.68 : 126,257.74 = 57,499.98 : x
  2. Step 2: Convert to fraction form
    91,434.68/126,257.74 = 57,499.98/x
  3. Step 3: Cross multiply
    91,434.68x = 126,257.74 × 57,499.98
  4. Step 4: Simplify right side
    91,434.68x = 7,259,817,524.85
  5. Step 5: Solve for x
    x = 7,259,817,524.85/91,434.68
  6. Step 6: Final answer
    x = 79,398.95

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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.