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Finding the Fourth Proportional to 88,988.82, 122,792.70 and 51,255.78

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Solution

The fourth proportional to 88,988.82, 122,792.70 and 51,255.78 is: 70,726.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,988.82 : 122,792.70 = 51,255.78 : x
  2. Step 2: Convert to fraction form
    88,988.82/122,792.70 = 51,255.78/x
  3. Step 3: Cross multiply
    88,988.82x = 122,792.70 × 51,255.78
  4. Step 4: Simplify right side
    88,988.82x = 6,293,835,616.81
  5. Step 5: Solve for x
    x = 6,293,835,616.81/88,988.82
  6. Step 6: Final answer
    x = 70,726.14

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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.