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Finding the Fourth Proportional to 91,463.56, 126,048.74 and 65,925.78

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Solution

The fourth proportional to 91,463.56, 126,048.74 and 65,925.78 is: 90,854.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,463.56 : 126,048.74 = 65,925.78 : x
  2. Step 2: Convert to fraction form
    91,463.56/126,048.74 = 65,925.78/x
  3. Step 3: Cross multiply
    91,463.56x = 126,048.74 × 65,925.78
  4. Step 4: Simplify right side
    91,463.56x = 8,309,860,700.21
  5. Step 5: Solve for x
    x = 8,309,860,700.21/91,463.56
  6. Step 6: Final answer
    x = 90,854.34

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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.