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Finding the Fourth Proportional to 60,362.39, 90,559.68 and 20,919.47

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Solution

The fourth proportional to 60,362.39, 90,559.68 and 20,919.47 is: 31,384.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,362.39 : 90,559.68 = 20,919.47 : x
  2. Step 2: Convert to fraction form
    60,362.39/90,559.68 = 20,919.47/x
  3. Step 3: Cross multiply
    60,362.39x = 90,559.68 × 20,919.47
  4. Step 4: Simplify right side
    60,362.39x = 1,894,460,056.17
  5. Step 5: Solve for x
    x = 1,894,460,056.17/60,362.39
  6. Step 6: Final answer
    x = 31,384.78

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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.