Home / 78,535.41-108,380.16-42,725.45

Finding the Fourth Proportional to 78,535.41, 108,380.16 and 42,725.45

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Solution

The fourth proportional to 78,535.41, 108,380.16 and 42,725.45 is: 58,961.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,535.41 : 108,380.16 = 42,725.45 : x
  2. Step 2: Convert to fraction form
    78,535.41/108,380.16 = 42,725.45/x
  3. Step 3: Cross multiply
    78,535.41x = 108,380.16 × 42,725.45
  4. Step 4: Simplify right side
    78,535.41x = 4,630,590,565.17
  5. Step 5: Solve for x
    x = 4,630,590,565.17/78,535.41
  6. Step 6: Final answer
    x = 58,961.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.