Home / 63,990.12-96,018.78-45,390.08

Finding the Fourth Proportional to 63,990.12, 96,018.78 and 45,390.08

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Solution

The fourth proportional to 63,990.12, 96,018.78 and 45,390.08 is: 68,108.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,990.12 : 96,018.78 = 45,390.08 : x
  2. Step 2: Convert to fraction form
    63,990.12/96,018.78 = 45,390.08/x
  3. Step 3: Cross multiply
    63,990.12x = 96,018.78 × 45,390.08
  4. Step 4: Simplify right side
    63,990.12x = 4,358,300,105.70
  5. Step 5: Solve for x
    x = 4,358,300,105.70/63,990.12
  6. Step 6: Final answer
    x = 68,108.95

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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.