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Finding the Fourth Proportional to 65,203.16, 89,974.14 and 51,806.84

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Solution

The fourth proportional to 65,203.16, 89,974.14 and 51,806.84 is: 71,488.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,203.16 : 89,974.14 = 51,806.84 : x
  2. Step 2: Convert to fraction form
    65,203.16/89,974.14 = 51,806.84/x
  3. Step 3: Cross multiply
    65,203.16x = 89,974.14 × 51,806.84
  4. Step 4: Simplify right side
    65,203.16x = 4,661,275,875.12
  5. Step 5: Solve for x
    x = 4,661,275,875.12/65,203.16
  6. Step 6: Final answer
    x = 71,488.50

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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.