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Finding the Fourth Proportional to 88,987.65, 122,808.65 and 51,261.25

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Solution

The fourth proportional to 88,987.65, 122,808.65 and 51,261.25 is: 70,743.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,987.65 : 122,808.65 = 51,261.25 : x
  2. Step 2: Convert to fraction form
    88,987.65/122,808.65 = 51,261.25/x
  3. Step 3: Cross multiply
    88,987.65x = 122,808.65 × 51,261.25
  4. Step 4: Simplify right side
    88,987.65x = 6,295,324,423.92
  5. Step 5: Solve for x
    x = 6,295,324,423.92/88,987.65
  6. Step 6: Final answer
    x = 70,743.80

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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.