Home / 91,423.32-137,138.58-28,237.82

Finding the Fourth Proportional to 91,423.32, 137,138.58 and 28,237.82

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Solution

The fourth proportional to 91,423.32, 137,138.58 and 28,237.82 is: 42,357.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,423.32 : 137,138.58 = 28,237.82 : x
  2. Step 2: Convert to fraction form
    91,423.32/137,138.58 = 28,237.82/x
  3. Step 3: Cross multiply
    91,423.32x = 137,138.58 × 28,237.82
  4. Step 4: Simplify right side
    91,423.32x = 3,872,493,851.40
  5. Step 5: Solve for x
    x = 3,872,493,851.40/91,423.32
  6. Step 6: Final answer
    x = 42,357.83

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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.