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Finding the Fourth Proportional to 61,299.41, 84,648.51 and 38,678.54

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Solution

The fourth proportional to 61,299.41, 84,648.51 and 38,678.54 is: 53,411.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,299.41 : 84,648.51 = 38,678.54 : x
  2. Step 2: Convert to fraction form
    61,299.41/84,648.51 = 38,678.54/x
  3. Step 3: Cross multiply
    61,299.41x = 84,648.51 × 38,678.54
  4. Step 4: Simplify right side
    61,299.41x = 3,274,080,356.73
  5. Step 5: Solve for x
    x = 3,274,080,356.73/61,299.41
  6. Step 6: Final answer
    x = 53,411.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.