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Finding the Fourth Proportional to 61,935.90, 85,478.91 and 36,785.46

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Solution

The fourth proportional to 61,935.90, 85,478.91 and 36,785.46 is: 50,768.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,935.90 : 85,478.91 = 36,785.46 : x
  2. Step 2: Convert to fraction form
    61,935.90/85,478.91 = 36,785.46/x
  3. Step 3: Cross multiply
    61,935.90x = 85,478.91 × 36,785.46
  4. Step 4: Simplify right side
    61,935.90x = 3,144,381,024.65
  5. Step 5: Solve for x
    x = 3,144,381,024.65/61,935.90
  6. Step 6: Final answer
    x = 50,768.31

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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.