Home / 90,854.80-136,261.56-28,510.48

Finding the Fourth Proportional to 90,854.80, 136,261.56 and 28,510.48

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Solution

The fourth proportional to 90,854.80, 136,261.56 and 28,510.48 is: 42,759.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,854.80 : 136,261.56 = 28,510.48 : x
  2. Step 2: Convert to fraction form
    90,854.80/136,261.56 = 28,510.48/x
  3. Step 3: Cross multiply
    90,854.80x = 136,261.56 × 28,510.48
  4. Step 4: Simplify right side
    90,854.80x = 3,884,882,481.15
  5. Step 5: Solve for x
    x = 3,884,882,481.15/90,854.80
  6. Step 6: Final answer
    x = 42,759.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.