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Finding the Fourth Proportional to 65,605.71, 90,520.43 and 48,649.17

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Solution

The fourth proportional to 65,605.71, 90,520.43 and 48,649.17 is: 67,124.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,605.71 : 90,520.43 = 48,649.17 : x
  2. Step 2: Convert to fraction form
    65,605.71/90,520.43 = 48,649.17/x
  3. Step 3: Cross multiply
    65,605.71x = 90,520.43 × 48,649.17
  4. Step 4: Simplify right side
    65,605.71x = 4,403,743,544.30
  5. Step 5: Solve for x
    x = 4,403,743,544.30/65,605.71
  6. Step 6: Final answer
    x = 67,124.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.