Home / 42,869.39-64,278.23-19,164.15

Finding the Fourth Proportional to 42,869.39, 64,278.23 and 19,164.15

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Solution

The fourth proportional to 42,869.39, 64,278.23 and 19,164.15 is: 28,734.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,869.39 : 64,278.23 = 19,164.15 : x
  2. Step 2: Convert to fraction form
    42,869.39/64,278.23 = 19,164.15/x
  3. Step 3: Cross multiply
    42,869.39x = 64,278.23 × 19,164.15
  4. Step 4: Simplify right side
    42,869.39x = 1,231,837,545.63
  5. Step 5: Solve for x
    x = 1,231,837,545.63/42,869.39
  6. Step 6: Final answer
    x = 28,734.67

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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.