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Finding the Fourth Proportional to 87,294.78, 120,460.95 and 51,483.18

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Solution

The fourth proportional to 87,294.78, 120,460.95 and 51,483.18 is: 71,043.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,294.78 : 120,460.95 = 51,483.18 : x
  2. Step 2: Convert to fraction form
    87,294.78/120,460.95 = 51,483.18/x
  3. Step 3: Cross multiply
    87,294.78x = 120,460.95 × 51,483.18
  4. Step 4: Simplify right side
    87,294.78x = 6,201,712,771.82
  5. Step 5: Solve for x
    x = 6,201,712,771.82/87,294.78
  6. Step 6: Final answer
    x = 71,043.34

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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.