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Finding the Fourth Proportional to 73,695.80, 101,619.90 and 49,780.96

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Solution

The fourth proportional to 73,695.80, 101,619.90 and 49,780.96 is: 68,643.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,695.80 : 101,619.90 = 49,780.96 : x
  2. Step 2: Convert to fraction form
    73,695.80/101,619.90 = 49,780.96/x
  3. Step 3: Cross multiply
    73,695.80x = 101,619.90 × 49,780.96
  4. Step 4: Simplify right side
    73,695.80x = 5,058,736,177.10
  5. Step 5: Solve for x
    x = 5,058,736,177.10/73,695.80
  6. Step 6: Final answer
    x = 68,643.48

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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.