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Finding the Fourth Proportional to 61,383.98, 84,721.54 and 38,424.48

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Solution

The fourth proportional to 61,383.98, 84,721.54 and 38,424.48 is: 53,033.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,383.98 : 84,721.54 = 38,424.48 : x
  2. Step 2: Convert to fraction form
    61,383.98/84,721.54 = 38,424.48/x
  3. Step 3: Cross multiply
    61,383.98x = 84,721.54 × 38,424.48
  4. Step 4: Simplify right side
    61,383.98x = 3,255,381,138.98
  5. Step 5: Solve for x
    x = 3,255,381,138.98/61,383.98
  6. Step 6: Final answer
    x = 53,033.07

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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.