Home / 90,917.43-136,397.60-28,587.93

Finding the Fourth Proportional to 90,917.43, 136,397.60 and 28,587.93

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Solution

The fourth proportional to 90,917.43, 136,397.60 and 28,587.93 is: 42,888.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,917.43 : 136,397.60 = 28,587.93 : x
  2. Step 2: Convert to fraction form
    90,917.43/136,397.60 = 28,587.93/x
  3. Step 3: Cross multiply
    90,917.43x = 136,397.60 × 28,587.93
  4. Step 4: Simplify right side
    90,917.43x = 3,899,325,040.97
  5. Step 5: Solve for x
    x = 3,899,325,040.97/90,917.43
  6. Step 6: Final answer
    x = 42,888.64

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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.