Home / 91,776.15-137,485.34-51,672.55

Finding the Fourth Proportional to 91,776.15, 137,485.34 and 51,672.55

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Solution

The fourth proportional to 91,776.15, 137,485.34 and 51,672.55 is: 77,408.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,776.15 : 137,485.34 = 51,672.55 : x
  2. Step 2: Convert to fraction form
    91,776.15/137,485.34 = 51,672.55/x
  3. Step 3: Cross multiply
    91,776.15x = 137,485.34 × 51,672.55
  4. Step 4: Simplify right side
    91,776.15x = 7,104,218,534.91
  5. Step 5: Solve for x
    x = 7,104,218,534.91/91,776.15
  6. Step 6: Final answer
    x = 77,408.11

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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.