Home / 78,833.32-118,297.02-31,440.04

Finding the Fourth Proportional to 78,833.32, 118,297.02 and 31,440.04

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Solution

The fourth proportional to 78,833.32, 118,297.02 and 31,440.04 is: 47,178.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,833.32 : 118,297.02 = 31,440.04 : x
  2. Step 2: Convert to fraction form
    78,833.32/118,297.02 = 31,440.04/x
  3. Step 3: Cross multiply
    78,833.32x = 118,297.02 × 31,440.04
  4. Step 4: Simplify right side
    78,833.32x = 3,719,263,040.68
  5. Step 5: Solve for x
    x = 3,719,263,040.68/78,833.32
  6. Step 6: Final answer
    x = 47,178.82

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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.