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Finding the Fourth Proportional to 78,832.95, 118,179.13 and 28,901.42

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Solution

The fourth proportional to 78,832.95, 118,179.13 and 28,901.42 is: 43,326.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,832.95 : 118,179.13 = 28,901.42 : x
  2. Step 2: Convert to fraction form
    78,832.95/118,179.13 = 28,901.42/x
  3. Step 3: Cross multiply
    78,832.95x = 118,179.13 × 28,901.42
  4. Step 4: Simplify right side
    78,832.95x = 3,415,544,091.91
  5. Step 5: Solve for x
    x = 3,415,544,091.91/78,832.95
  6. Step 6: Final answer
    x = 43,326.35

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1.5x scale

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.