Home / 71,977.12-99,326.08-39,270.32

Finding the Fourth Proportional to 71,977.12, 99,326.08 and 39,270.32

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Solution

The fourth proportional to 71,977.12, 99,326.08 and 39,270.32 is: 54,191.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,977.12 : 99,326.08 = 39,270.32 : x
  2. Step 2: Convert to fraction form
    71,977.12/99,326.08 = 39,270.32/x
  3. Step 3: Cross multiply
    71,977.12x = 99,326.08 × 39,270.32
  4. Step 4: Simplify right side
    71,977.12x = 3,900,566,945.95
  5. Step 5: Solve for x
    x = 3,900,566,945.95/71,977.12
  6. Step 6: Final answer
    x = 54,191.76

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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.