Home / 78,091.12-107,765.94-42,281.56

Finding the Fourth Proportional to 78,091.12, 107,765.94 and 42,281.56

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Solution

The fourth proportional to 78,091.12, 107,765.94 and 42,281.56 is: 58,348.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,091.12 : 107,765.94 = 42,281.56 : x
  2. Step 2: Convert to fraction form
    78,091.12/107,765.94 = 42,281.56/x
  3. Step 3: Cross multiply
    78,091.12x = 107,765.94 × 42,281.56
  4. Step 4: Simplify right side
    78,091.12x = 4,556,512,058.07
  5. Step 5: Solve for x
    x = 4,556,512,058.07/78,091.12
  6. Step 6: Final answer
    x = 58,348.66

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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.