Home / 90,680.34-136,065.10-40,795.68

Finding the Fourth Proportional to 90,680.34, 136,065.10 and 40,795.68

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Solution

The fourth proportional to 90,680.34, 136,065.10 and 40,795.68 is: 61,213.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,680.34 : 136,065.10 = 40,795.68 : x
  2. Step 2: Convert to fraction form
    90,680.34/136,065.10 = 40,795.68/x
  3. Step 3: Cross multiply
    90,680.34x = 136,065.10 × 40,795.68
  4. Step 4: Simplify right side
    90,680.34x = 5,550,868,278.77
  5. Step 5: Solve for x
    x = 5,550,868,278.77/90,680.34
  6. Step 6: Final answer
    x = 61,213.58

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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.