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Finding the Fourth Proportional to 42,641.53, 63,879.16 and 25,960.18

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Solution

The fourth proportional to 42,641.53, 63,879.16 and 25,960.18 is: 38,889.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,641.53 : 63,879.16 = 25,960.18 : x
  2. Step 2: Convert to fraction form
    42,641.53/63,879.16 = 25,960.18/x
  3. Step 3: Cross multiply
    42,641.53x = 63,879.16 × 25,960.18
  4. Step 4: Simplify right side
    42,641.53x = 1,658,314,491.85
  5. Step 5: Solve for x
    x = 1,658,314,491.85/42,641.53
  6. Step 6: Final answer
    x = 38,889.66

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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.