Home / 72,310.03-99,787.08-40,479.19

Finding the Fourth Proportional to 72,310.03, 99,787.08 and 40,479.19

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Solution

The fourth proportional to 72,310.03, 99,787.08 and 40,479.19 is: 55,860.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,310.03 : 99,787.08 = 40,479.19 : x
  2. Step 2: Convert to fraction form
    72,310.03/99,787.08 = 40,479.19/x
  3. Step 3: Cross multiply
    72,310.03x = 99,787.08 × 40,479.19
  4. Step 4: Simplify right side
    72,310.03x = 4,039,300,170.87
  5. Step 5: Solve for x
    x = 4,039,300,170.87/72,310.03
  6. Step 6: Final answer
    x = 55,860.86

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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.