Home / 91,931.06-137,904.53-25,371.20

Finding the Fourth Proportional to 91,931.06, 137,904.53 and 25,371.20

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Solution

The fourth proportional to 91,931.06, 137,904.53 and 25,371.20 is: 38,058.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,931.06 : 137,904.53 = 25,371.20 : x
  2. Step 2: Convert to fraction form
    91,931.06/137,904.53 = 25,371.20/x
  3. Step 3: Cross multiply
    91,931.06x = 137,904.53 × 25,371.20
  4. Step 4: Simplify right side
    91,931.06x = 3,498,802,595.16
  5. Step 5: Solve for x
    x = 3,498,802,595.16/91,931.06
  6. Step 6: Final answer
    x = 38,058.98

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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.