Home / 70,380.60-105,480.66-28,778.04

Finding the Fourth Proportional to 70,380.60, 105,480.66 and 28,778.04

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Solution

The fourth proportional to 70,380.60, 105,480.66 and 28,778.04 is: 43,130.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,380.60 : 105,480.66 = 28,778.04 : x
  2. Step 2: Convert to fraction form
    70,380.60/105,480.66 = 28,778.04/x
  3. Step 3: Cross multiply
    70,380.60x = 105,480.66 × 28,778.04
  4. Step 4: Simplify right side
    70,380.60x = 3,035,526,652.71
  5. Step 5: Solve for x
    x = 3,035,526,652.71/70,380.60
  6. Step 6: Final answer
    x = 43,130.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.