Home / 87,768.47-121,120.12-47,482.14

Finding the Fourth Proportional to 87,768.47, 121,120.12 and 47,482.14

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Solution

The fourth proportional to 87,768.47, 121,120.12 and 47,482.14 is: 65,525.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,768.47 : 121,120.12 = 47,482.14 : x
  2. Step 2: Convert to fraction form
    87,768.47/121,120.12 = 47,482.14/x
  3. Step 3: Cross multiply
    87,768.47x = 121,120.12 × 47,482.14
  4. Step 4: Simplify right side
    87,768.47x = 5,751,042,494.66
  5. Step 5: Solve for x
    x = 5,751,042,494.66/87,768.47
  6. Step 6: Final answer
    x = 65,525.15

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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.