Home / 78,195.89-107,907.44-42,385.13

Finding the Fourth Proportional to 78,195.89, 107,907.44 and 42,385.13

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Solution

The fourth proportional to 78,195.89, 107,907.44 and 42,385.13 is: 58,489.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,195.89 : 107,907.44 = 42,385.13 : x
  2. Step 2: Convert to fraction form
    78,195.89/107,907.44 = 42,385.13/x
  3. Step 3: Cross multiply
    78,195.89x = 107,907.44 × 42,385.13
  4. Step 4: Simplify right side
    78,195.89x = 4,573,671,370.95
  5. Step 5: Solve for x
    x = 4,573,671,370.95/78,195.89
  6. Step 6: Final answer
    x = 58,489.92

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1.5x scale

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.