Home / 91,388.70-137,030.29-28,191.86

Finding the Fourth Proportional to 91,388.70, 137,030.29 and 28,191.86

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Solution

The fourth proportional to 91,388.70, 137,030.29 and 28,191.86 is: 42,271.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,388.70 : 137,030.29 = 28,191.86 : x
  2. Step 2: Convert to fraction form
    91,388.70/137,030.29 = 28,191.86/x
  3. Step 3: Cross multiply
    91,388.70x = 137,030.29 × 28,191.86
  4. Step 4: Simplify right side
    91,388.70x = 3,863,137,925.33
  5. Step 5: Solve for x
    x = 3,863,137,925.33/91,388.70
  6. Step 6: Final answer
    x = 42,271.51

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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.