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Finding the Fourth Proportional to 72,799.62, 100,439.38 and 59,347.68

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Solution

The fourth proportional to 72,799.62, 100,439.38 and 59,347.68 is: 81,880.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,799.62 : 100,439.38 = 59,347.68 : x
  2. Step 2: Convert to fraction form
    72,799.62/100,439.38 = 59,347.68/x
  3. Step 3: Cross multiply
    72,799.62x = 100,439.38 × 59,347.68
  4. Step 4: Simplify right side
    72,799.62x = 5,960,844,183.64
  5. Step 5: Solve for x
    x = 5,960,844,183.64/72,799.62
  6. Step 6: Final answer
    x = 81,880.16

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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.