Home / 78,929.52-118,438.02-32,178.78

Finding the Fourth Proportional to 78,929.52, 118,438.02 and 32,178.78

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Solution

The fourth proportional to 78,929.52, 118,438.02 and 32,178.78 is: 48,286.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,929.52 : 118,438.02 = 32,178.78 : x
  2. Step 2: Convert to fraction form
    78,929.52/118,438.02 = 32,178.78/x
  3. Step 3: Cross multiply
    78,929.52x = 118,438.02 × 32,178.78
  4. Step 4: Simplify right side
    78,929.52x = 3,811,190,989.22
  5. Step 5: Solve for x
    x = 3,811,190,989.22/78,929.52
  6. Step 6: Final answer
    x = 48,286.00

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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.