Home / 90,909.68-136,345.07-28,546.16

Finding the Fourth Proportional to 90,909.68, 136,345.07 and 28,546.16

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Solution

The fourth proportional to 90,909.68, 136,345.07 and 28,546.16 is: 42,813.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,909.68 : 136,345.07 = 28,546.16 : x
  2. Step 2: Convert to fraction form
    90,909.68/136,345.07 = 28,546.16/x
  3. Step 3: Cross multiply
    90,909.68x = 136,345.07 × 28,546.16
  4. Step 4: Simplify right side
    90,909.68x = 3,892,127,573.07
  5. Step 5: Solve for x
    x = 3,892,127,573.07/90,909.68
  6. Step 6: Final answer
    x = 42,813.13

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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.