Home / 91,470.86-137,172.20-31,482.56

Finding the Fourth Proportional to 91,470.86, 137,172.20 and 31,482.56

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Solution

The fourth proportional to 91,470.86, 137,172.20 and 31,482.56 is: 47,212.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,470.86 : 137,172.20 = 31,482.56 : x
  2. Step 2: Convert to fraction form
    91,470.86/137,172.20 = 31,482.56/x
  3. Step 3: Cross multiply
    91,470.86x = 137,172.20 × 31,482.56
  4. Step 4: Simplify right side
    91,470.86x = 4,318,532,438.47
  5. Step 5: Solve for x
    x = 4,318,532,438.47/91,470.86
  6. Step 6: Final answer
    x = 47,212.11

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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.