Home / 42,120.75-63,180.86-10,530.66

Finding the Fourth Proportional to 42,120.75, 63,180.86 and 10,530.66

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Solution

The fourth proportional to 42,120.75, 63,180.86 and 10,530.66 is: 15,795.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,120.75 : 63,180.86 = 10,530.66 : x
  2. Step 2: Convert to fraction form
    42,120.75/63,180.86 = 10,530.66/x
  3. Step 3: Cross multiply
    42,120.75x = 63,180.86 × 10,530.66
  4. Step 4: Simplify right side
    42,120.75x = 665,336,155.17
  5. Step 5: Solve for x
    x = 665,336,155.17/42,120.75
  6. Step 6: Final answer
    x = 15,795.92

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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.