Home / 90,364.80-135,508.32-28,040.16

Finding the Fourth Proportional to 90,364.80, 135,508.32 and 28,040.16

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Solution

The fourth proportional to 90,364.80, 135,508.32 and 28,040.16 is: 42,048.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,364.80 : 135,508.32 = 28,040.16 : x
  2. Step 2: Convert to fraction form
    90,364.80/135,508.32 = 28,040.16/x
  3. Step 3: Cross multiply
    90,364.80x = 135,508.32 × 28,040.16
  4. Step 4: Simplify right side
    90,364.80x = 3,799,674,974.13
  5. Step 5: Solve for x
    x = 3,799,674,974.13/90,364.80
  6. Step 6: Final answer
    x = 42,048.18

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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.