Home / 90,873.42-136,331.69-28,543.92

Finding the Fourth Proportional to 90,873.42, 136,331.69 and 28,543.92

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Solution

The fourth proportional to 90,873.42, 136,331.69 and 28,543.92 is: 42,822.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,873.42 : 136,331.69 = 28,543.92 : x
  2. Step 2: Convert to fraction form
    90,873.42/136,331.69 = 28,543.92/x
  3. Step 3: Cross multiply
    90,873.42x = 136,331.69 × 28,543.92
  4. Step 4: Simplify right side
    90,873.42x = 3,891,440,852.82
  5. Step 5: Solve for x
    x = 3,891,440,852.82/90,873.42
  6. Step 6: Final answer
    x = 42,822.65

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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.