Home / 91,491.23-137,186.28-28,293.95

Finding the Fourth Proportional to 91,491.23, 137,186.28 and 28,293.95

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Solution

The fourth proportional to 91,491.23, 137,186.28 and 28,293.95 is: 42,425.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,491.23 : 137,186.28 = 28,293.95 : x
  2. Step 2: Convert to fraction form
    91,491.23/137,186.28 = 28,293.95/x
  3. Step 3: Cross multiply
    91,491.23x = 137,186.28 × 28,293.95
  4. Step 4: Simplify right side
    91,491.23x = 3,881,541,061.07
  5. Step 5: Solve for x
    x = 3,881,541,061.07/91,491.23
  6. Step 6: Final answer
    x = 42,425.28

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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.