Home / 98,247.42-147,399.88-31,686.20

Finding the Fourth Proportional to 98,247.42, 147,399.88 and 31,686.20

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Solution

The fourth proportional to 98,247.42, 147,399.88 and 31,686.20 is: 47,538.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,247.42 : 147,399.88 = 31,686.20 : x
  2. Step 2: Convert to fraction form
    98,247.42/147,399.88 = 31,686.20/x
  3. Step 3: Cross multiply
    98,247.42x = 147,399.88 × 31,686.20
  4. Step 4: Simplify right side
    98,247.42x = 4,670,542,077.66
  5. Step 5: Solve for x
    x = 4,670,542,077.66/98,247.42
  6. Step 6: Final answer
    x = 47,538.57

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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.