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Finding the Fourth Proportional to 91,703.40, 137,535.90 and 44,989.80

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Solution

The fourth proportional to 91,703.40, 137,535.90 and 44,989.80 is: 67,475.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,703.40 : 137,535.90 = 44,989.80 : x
  2. Step 2: Convert to fraction form
    91,703.40/137,535.90 = 44,989.80/x
  3. Step 3: Cross multiply
    91,703.40x = 137,535.90 × 44,989.80
  4. Step 4: Simplify right side
    91,703.40x = 6,187,712,633.82
  5. Step 5: Solve for x
    x = 6,187,712,633.82/91,703.40
  6. Step 6: Final answer
    x = 67,475.28

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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.