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Finding the Fourth Proportional to 91,403.58, 137,050 and 59,775.46

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Solution

The fourth proportional to 91,403.58, 137,050 and 59,775.46 is: 89,626.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,403.58 : 137,050 = 59,775.46 : x
  2. Step 2: Convert to fraction form
    91,403.58/137,050 = 59,775.46/x
  3. Step 3: Cross multiply
    91,403.58x = 137,050 × 59,775.46
  4. Step 4: Simplify right side
    91,403.58x = 8,192,226,793
  5. Step 5: Solve for x
    x = 8,192,226,793/91,403.58
  6. Step 6: Final answer
    x = 89,626.98

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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.