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Finding the Fourth Proportional to 61,988.67, 92,911.73 and 28,638.68

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Solution

The fourth proportional to 61,988.67, 92,911.73 and 28,638.68 is: 42,925.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,988.67 : 92,911.73 = 28,638.68 : x
  2. Step 2: Convert to fraction form
    61,988.67/92,911.73 = 28,638.68/x
  3. Step 3: Cross multiply
    61,988.67x = 92,911.73 × 28,638.68
  4. Step 4: Simplify right side
    61,988.67x = 2,660,868,695.96
  5. Step 5: Solve for x
    x = 2,660,868,695.96/61,988.67
  6. Step 6: Final answer
    x = 42,925.08

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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.