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Finding the Fourth Proportional to 62,987.55, 94,494.65 and 20,865.25

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Solution

The fourth proportional to 62,987.55, 94,494.65 and 20,865.25 is: 31,302.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,987.55 : 94,494.65 = 20,865.25 : x
  2. Step 2: Convert to fraction form
    62,987.55/94,494.65 = 20,865.25/x
  3. Step 3: Cross multiply
    62,987.55x = 94,494.65 × 20,865.25
  4. Step 4: Simplify right side
    62,987.55x = 1,971,654,495.91
  5. Step 5: Solve for x
    x = 1,971,654,495.91/62,987.55
  6. Step 6: Final answer
    x = 31,302.29

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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.