Home / 90,872.72-136,309.16-40,894.46

Finding the Fourth Proportional to 90,872.72, 136,309.16 and 40,894.46

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Solution

The fourth proportional to 90,872.72, 136,309.16 and 40,894.46 is: 61,341.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,872.72 : 136,309.16 = 40,894.46 : x
  2. Step 2: Convert to fraction form
    90,872.72/136,309.16 = 40,894.46/x
  3. Step 3: Cross multiply
    90,872.72x = 136,309.16 × 40,894.46
  4. Step 4: Simplify right side
    90,872.72x = 5,574,288,605.24
  5. Step 5: Solve for x
    x = 5,574,288,605.24/90,872.72
  6. Step 6: Final answer
    x = 61,341.72

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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.