Home / 74,891.10-112,305.78-30,487.80

Finding the Fourth Proportional to 74,891.10, 112,305.78 and 30,487.80

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Solution

The fourth proportional to 74,891.10, 112,305.78 and 30,487.80 is: 45,719.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,891.10 : 112,305.78 = 30,487.80 : x
  2. Step 2: Convert to fraction form
    74,891.10/112,305.78 = 30,487.80/x
  3. Step 3: Cross multiply
    74,891.10x = 112,305.78 × 30,487.80
  4. Step 4: Simplify right side
    74,891.10x = 3,423,956,159.48
  5. Step 5: Solve for x
    x = 3,423,956,159.48/74,891.10
  6. Step 6: Final answer
    x = 45,719.13

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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.