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Finding the Fourth Proportional to 60,250, 90,312.32 and 20,239.30

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Solution

The fourth proportional to 60,250, 90,312.32 and 20,239.30 is: 30,337.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,250 : 90,312.32 = 20,239.30 : x
  2. Step 2: Convert to fraction form
    60,250/90,312.32 = 20,239.30/x
  3. Step 3: Cross multiply
    60,250x = 90,312.32 × 20,239.30
  4. Step 4: Simplify right side
    60,250x = 1,827,858,138.18
  5. Step 5: Solve for x
    x = 1,827,858,138.18/60,250
  6. Step 6: Final answer
    x = 30,337.89

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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.