Home / 71,503.12-98,678.94-39,675.52

Finding the Fourth Proportional to 71,503.12, 98,678.94 and 39,675.52

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Solution

The fourth proportional to 71,503.12, 98,678.94 and 39,675.52 is: 54,754.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,503.12 : 98,678.94 = 39,675.52 : x
  2. Step 2: Convert to fraction form
    71,503.12/98,678.94 = 39,675.52/x
  3. Step 3: Cross multiply
    71,503.12x = 98,678.94 × 39,675.52
  4. Step 4: Simplify right side
    71,503.12x = 3,915,138,257.55
  5. Step 5: Solve for x
    x = 3,915,138,257.55/71,503.12
  6. Step 6: Final answer
    x = 54,754.79

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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.