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Finding the Fourth Proportional to 91,803.60, 126,713.80 and 54,089.68

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Solution

The fourth proportional to 91,803.60, 126,713.80 and 54,089.68 is: 74,658.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,803.60 : 126,713.80 = 54,089.68 : x
  2. Step 2: Convert to fraction form
    91,803.60/126,713.80 = 54,089.68/x
  3. Step 3: Cross multiply
    91,803.60x = 126,713.80 × 54,089.68
  4. Step 4: Simplify right side
    91,803.60x = 6,853,908,893.58
  5. Step 5: Solve for x
    x = 6,853,908,893.58/91,803.60
  6. Step 6: Final answer
    x = 74,658.39

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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.