Home / 74,634.20-112,037.70-45,085.40

Finding the Fourth Proportional to 74,634.20, 112,037.70 and 45,085.40

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Solution

The fourth proportional to 74,634.20, 112,037.70 and 45,085.40 is: 67,680.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,634.20 : 112,037.70 = 45,085.40 : x
  2. Step 2: Convert to fraction form
    74,634.20/112,037.70 = 45,085.40/x
  3. Step 3: Cross multiply
    74,634.20x = 112,037.70 × 45,085.40
  4. Step 4: Simplify right side
    74,634.20x = 5,051,264,519.58
  5. Step 5: Solve for x
    x = 5,051,264,519.58/74,634.20
  6. Step 6: Final answer
    x = 67,680.29

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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.