Home / 90,254.27-135,402.16-30,290.70

Finding the Fourth Proportional to 90,254.27, 135,402.16 and 30,290.70

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Solution

The fourth proportional to 90,254.27, 135,402.16 and 30,290.70 is: 45,443.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,254.27 : 135,402.16 = 30,290.70 : x
  2. Step 2: Convert to fraction form
    90,254.27/135,402.16 = 30,290.70/x
  3. Step 3: Cross multiply
    90,254.27x = 135,402.16 × 30,290.70
  4. Step 4: Simplify right side
    90,254.27x = 4,101,426,207.91
  5. Step 5: Solve for x
    x = 4,101,426,207.91/90,254.27
  6. Step 6: Final answer
    x = 45,443.02

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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.