Home / 90,873.32-136,331.53-28,543.82

Finding the Fourth Proportional to 90,873.32, 136,331.53 and 28,543.82

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Solution

The fourth proportional to 90,873.32, 136,331.53 and 28,543.82 is: 42,822.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,873.32 : 136,331.53 = 28,543.82 : x
  2. Step 2: Convert to fraction form
    90,873.32/136,331.53 = 28,543.82/x
  3. Step 3: Cross multiply
    90,873.32x = 136,331.53 × 28,543.82
  4. Step 4: Simplify right side
    90,873.32x = 3,891,421,899.63
  5. Step 5: Solve for x
    x = 3,891,421,899.63/90,873.32
  6. Step 6: Final answer
    x = 42,822.49

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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.