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Finding the Fourth Proportional to 91,325.50, 126,030.62 and 51,041.87

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Solution

The fourth proportional to 91,325.50, 126,030.62 and 51,041.87 is: 70,438.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,325.50 : 126,030.62 = 51,041.87 : x
  2. Step 2: Convert to fraction form
    91,325.50/126,030.62 = 51,041.87/x
  3. Step 3: Cross multiply
    91,325.50x = 126,030.62 × 51,041.87
  4. Step 4: Simplify right side
    91,325.50x = 6,432,838,251.39
  5. Step 5: Solve for x
    x = 6,432,838,251.39/91,325.50
  6. Step 6: Final answer
    x = 70,438.58

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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.