Home / 43,019.28-64,545.47-20,830.95

Finding the Fourth Proportional to 43,019.28, 64,545.47 and 20,830.95

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Solution

The fourth proportional to 43,019.28, 64,545.47 and 20,830.95 is: 31,254.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,019.28 : 64,545.47 = 20,830.95 : x
  2. Step 2: Convert to fraction form
    43,019.28/64,545.47 = 20,830.95/x
  3. Step 3: Cross multiply
    43,019.28x = 64,545.47 × 20,830.95
  4. Step 4: Simplify right side
    43,019.28x = 1,344,543,458.30
  5. Step 5: Solve for x
    x = 1,344,543,458.30/43,019.28
  6. Step 6: Final answer
    x = 31,254.44

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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.