Home / 90,701.61-136,098.50-40,771.65

Finding the Fourth Proportional to 90,701.61, 136,098.50 and 40,771.65

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Solution

The fourth proportional to 90,701.61, 136,098.50 and 40,771.65 is: 61,178.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,701.61 : 136,098.50 = 40,771.65 : x
  2. Step 2: Convert to fraction form
    90,701.61/136,098.50 = 40,771.65/x
  3. Step 3: Cross multiply
    90,701.61x = 136,098.50 × 40,771.65
  4. Step 4: Simplify right side
    90,701.61x = 5,548,960,203.67
  5. Step 5: Solve for x
    x = 5,548,960,203.67/90,701.61
  6. Step 6: Final answer
    x = 61,178.19

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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.