Home / 90,810.84-136,214.90-40,855.66

Finding the Fourth Proportional to 90,810.84, 136,214.90 and 40,855.66

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Solution

The fourth proportional to 90,810.84, 136,214.90 and 40,855.66 is: 61,282.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,810.84 : 136,214.90 = 40,855.66 : x
  2. Step 2: Convert to fraction form
    90,810.84/136,214.90 = 40,855.66/x
  3. Step 3: Cross multiply
    90,810.84x = 136,214.90 × 40,855.66
  4. Step 4: Simplify right side
    90,810.84x = 5,565,149,641.33
  5. Step 5: Solve for x
    x = 5,565,149,641.33/90,810.84
  6. Step 6: Final answer
    x = 61,282.88

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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.