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Finding the Fourth Proportional to 52,920.96, 73,019.40 and 30,552

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Solution

The fourth proportional to 52,920.96, 73,019.40 and 30,552 is: 42,155.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,920.96 : 73,019.40 = 30,552 : x
  2. Step 2: Convert to fraction form
    52,920.96/73,019.40 = 30,552/x
  3. Step 3: Cross multiply
    52,920.96x = 73,019.40 × 30,552
  4. Step 4: Simplify right side
    52,920.96x = 2,230,888,708.80
  5. Step 5: Solve for x
    x = 2,230,888,708.80/52,920.96
  6. Step 6: Final answer
    x = 42,155.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.