Home / 91,586.90-137,400.08-28,405.76

Finding the Fourth Proportional to 91,586.90, 137,400.08 and 28,405.76

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Solution

The fourth proportional to 91,586.90, 137,400.08 and 28,405.76 is: 42,614.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,586.90 : 137,400.08 = 28,405.76 : x
  2. Step 2: Convert to fraction form
    91,586.90/137,400.08 = 28,405.76/x
  3. Step 3: Cross multiply
    91,586.90x = 137,400.08 × 28,405.76
  4. Step 4: Simplify right side
    91,586.90x = 3,902,953,696.46
  5. Step 5: Solve for x
    x = 3,902,953,696.46/91,586.90
  6. Step 6: Final answer
    x = 42,614.76

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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.