Home / 91,708.80-137,598.12-47,307.24

Finding the Fourth Proportional to 91,708.80, 137,598.12 and 47,307.24

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Solution

The fourth proportional to 91,708.80, 137,598.12 and 47,307.24 is: 70,978.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,708.80 : 137,598.12 = 47,307.24 : x
  2. Step 2: Convert to fraction form
    91,708.80/137,598.12 = 47,307.24/x
  3. Step 3: Cross multiply
    91,708.80x = 137,598.12 × 47,307.24
  4. Step 4: Simplify right side
    91,708.80x = 6,509,387,286.39
  5. Step 5: Solve for x
    x = 6,509,387,286.39/91,708.80
  6. Step 6: Final answer
    x = 70,978.87

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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.