Home / 72,311.03-99,788.46-40,480.19

Finding the Fourth Proportional to 72,311.03, 99,788.46 and 40,480.19

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Solution

The fourth proportional to 72,311.03, 99,788.46 and 40,480.19 is: 55,862.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,311.03 : 99,788.46 = 40,480.19 : x
  2. Step 2: Convert to fraction form
    72,311.03/99,788.46 = 40,480.19/x
  3. Step 3: Cross multiply
    72,311.03x = 99,788.46 × 40,480.19
  4. Step 4: Simplify right side
    72,311.03x = 4,039,455,820.61
  5. Step 5: Solve for x
    x = 4,039,455,820.61/72,311.03
  6. Step 6: Final answer
    x = 55,862.24

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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.