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Finding the Fourth Proportional to 61,660.78, 85,085.75 and 34,798.10

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Solution

The fourth proportional to 61,660.78, 85,085.75 and 34,798.10 is: 48,017.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,660.78 : 85,085.75 = 34,798.10 : x
  2. Step 2: Convert to fraction form
    61,660.78/85,085.75 = 34,798.10/x
  3. Step 3: Cross multiply
    61,660.78x = 85,085.75 × 34,798.10
  4. Step 4: Simplify right side
    61,660.78x = 2,960,822,615.37
  5. Step 5: Solve for x
    x = 2,960,822,615.37/61,660.78
  6. Step 6: Final answer
    x = 48,017.92

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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.