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Finding the Fourth Proportional to 61,484.17, 84,816.06 and 38,815

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Solution

The fourth proportional to 61,484.17, 84,816.06 and 38,815 is: 53,544.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,484.17 : 84,816.06 = 38,815 : x
  2. Step 2: Convert to fraction form
    61,484.17/84,816.06 = 38,815/x
  3. Step 3: Cross multiply
    61,484.17x = 84,816.06 × 38,815
  4. Step 4: Simplify right side
    61,484.17x = 3,292,135,368.90
  5. Step 5: Solve for x
    x = 3,292,135,368.90/61,484.17
  6. Step 6: Final answer
    x = 53,544.44

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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.