Home / 91,975.77-137,963.32-25,415.78

Finding the Fourth Proportional to 91,975.77, 137,963.32 and 25,415.78

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Solution

The fourth proportional to 91,975.77, 137,963.32 and 25,415.78 is: 38,123.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,975.77 : 137,963.32 = 25,415.78 : x
  2. Step 2: Convert to fraction form
    91,975.77/137,963.32 = 25,415.78/x
  3. Step 3: Cross multiply
    91,975.77x = 137,963.32 × 25,415.78
  4. Step 4: Simplify right side
    91,975.77x = 3,506,444,635.83
  5. Step 5: Solve for x
    x = 3,506,444,635.83/91,975.77
  6. Step 6: Final answer
    x = 38,123.57

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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.