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Finding the Fourth Proportional to 65,607.48, 90,581.91 and 50,473.44

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Solution

The fourth proportional to 65,607.48, 90,581.91 and 50,473.44 is: 69,686.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,607.48 : 90,581.91 = 50,473.44 : x
  2. Step 2: Convert to fraction form
    65,607.48/90,581.91 = 50,473.44/x
  3. Step 3: Cross multiply
    65,607.48x = 90,581.91 × 50,473.44
  4. Step 4: Simplify right side
    65,607.48x = 4,571,980,787.48
  5. Step 5: Solve for x
    x = 4,571,980,787.48/65,607.48
  6. Step 6: Final answer
    x = 69,686.88

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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.