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Finding the Fourth Proportional to 90,159.74, 124,420.43 and 49,324.20

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Solution

The fourth proportional to 90,159.74, 124,420.43 and 49,324.20 is: 68,067.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,159.74 : 124,420.43 = 49,324.20 : x
  2. Step 2: Convert to fraction form
    90,159.74/124,420.43 = 49,324.20/x
  3. Step 3: Cross multiply
    90,159.74x = 124,420.43 × 49,324.20
  4. Step 4: Simplify right side
    90,159.74x = 6,136,938,296.72
  5. Step 5: Solve for x
    x = 6,136,938,296.72/90,159.74
  6. Step 6: Final answer
    x = 68,067.39

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1.5x scale

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.