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Finding the Fourth Proportional to 61,871.48, 92,818.76 and 28,569.54

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Solution

The fourth proportional to 61,871.48, 92,818.76 and 28,569.54 is: 42,859.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,871.48 : 92,818.76 = 28,569.54 : x
  2. Step 2: Convert to fraction form
    61,871.48/92,818.76 = 28,569.54/x
  3. Step 3: Cross multiply
    61,871.48x = 92,818.76 × 28,569.54
  4. Step 4: Simplify right side
    61,871.48x = 2,651,789,133.72
  5. Step 5: Solve for x
    x = 2,651,789,133.72/61,871.48
  6. Step 6: Final answer
    x = 42,859.64

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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.