Home / 81,713.49-112,767.53-45,902.72

Finding the Fourth Proportional to 81,713.49, 112,767.53 and 45,902.72

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Solution

The fourth proportional to 81,713.49, 112,767.53 and 45,902.72 is: 63,347.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,713.49 : 112,767.53 = 45,902.72 : x
  2. Step 2: Convert to fraction form
    81,713.49/112,767.53 = 45,902.72/x
  3. Step 3: Cross multiply
    81,713.49x = 112,767.53 × 45,902.72
  4. Step 4: Simplify right side
    81,713.49x = 5,176,335,561.33
  5. Step 5: Solve for x
    x = 5,176,335,561.33/81,713.49
  6. Step 6: Final answer
    x = 63,347.38

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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.