Home / 72,998.20-109,510.26-28,645.84

Finding the Fourth Proportional to 72,998.20, 109,510.26 and 28,645.84

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Solution

The fourth proportional to 72,998.20, 109,510.26 and 28,645.84 is: 42,973.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,998.20 : 109,510.26 = 28,645.84 : x
  2. Step 2: Convert to fraction form
    72,998.20/109,510.26 = 28,645.84/x
  3. Step 3: Cross multiply
    72,998.20x = 109,510.26 × 28,645.84
  4. Step 4: Simplify right side
    72,998.20x = 3,137,013,386.32
  5. Step 5: Solve for x
    x = 3,137,013,386.32/72,998.20
  6. Step 6: Final answer
    x = 42,973.85

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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.