Home / 91,619.28-137,448.52-28,438.02

Finding the Fourth Proportional to 91,619.28, 137,448.52 and 28,438.02

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Solution

The fourth proportional to 91,619.28, 137,448.52 and 28,438.02 is: 42,663.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,619.28 : 137,448.52 = 28,438.02 : x
  2. Step 2: Convert to fraction form
    91,619.28/137,448.52 = 28,438.02/x
  3. Step 3: Cross multiply
    91,619.28x = 137,448.52 × 28,438.02
  4. Step 4: Simplify right side
    91,619.28x = 3,908,763,760.73
  5. Step 5: Solve for x
    x = 3,908,763,760.73/91,619.28
  6. Step 6: Final answer
    x = 42,663.11

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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.