Home / 77,048.10-115,604.55-42,012.90

Finding the Fourth Proportional to 77,048.10, 115,604.55 and 42,012.90

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Solution

The fourth proportional to 77,048.10, 115,604.55 and 42,012.90 is: 63,037.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,048.10 : 115,604.55 = 42,012.90 : x
  2. Step 2: Convert to fraction form
    77,048.10/115,604.55 = 42,012.90/x
  3. Step 3: Cross multiply
    77,048.10x = 115,604.55 × 42,012.90
  4. Step 4: Simplify right side
    77,048.10x = 4,856,882,398.70
  5. Step 5: Solve for x
    x = 4,856,882,398.70/77,048.10
  6. Step 6: Final answer
    x = 63,037.02

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1.5x scale

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.