Home / 72,928.13-109,410.65-20,337.62

Finding the Fourth Proportional to 72,928.13, 109,410.65 and 20,337.62

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Solution

The fourth proportional to 72,928.13, 109,410.65 and 20,337.62 is: 30,511.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,928.13 : 109,410.65 = 20,337.62 : x
  2. Step 2: Convert to fraction form
    72,928.13/109,410.65 = 20,337.62/x
  3. Step 3: Cross multiply
    72,928.13x = 109,410.65 × 20,337.62
  4. Step 4: Simplify right side
    72,928.13x = 2,225,151,651.18
  5. Step 5: Solve for x
    x = 2,225,151,651.18/72,928.13
  6. Step 6: Final answer
    x = 30,511.57

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1.5x scale

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.