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Finding the Fourth Proportional to 65,612.64, 90,549.36 and 49,671.84

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Solution

The fourth proportional to 65,612.64, 90,549.36 and 49,671.84 is: 68,550.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,612.64 : 90,549.36 = 49,671.84 : x
  2. Step 2: Convert to fraction form
    65,612.64/90,549.36 = 49,671.84/x
  3. Step 3: Cross multiply
    65,612.64x = 90,549.36 × 49,671.84
  4. Step 4: Simplify right side
    65,612.64x = 4,497,753,322.02
  5. Step 5: Solve for x
    x = 4,497,753,322.02/65,612.64
  6. Step 6: Final answer
    x = 68,550.10

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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.