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Finding the Fourth Proportional to 65,488.78, 90,374.64 and 37,194.47

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Solution

The fourth proportional to 65,488.78, 90,374.64 and 37,194.47 is: 51,328.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,488.78 : 90,374.64 = 37,194.47 : x
  2. Step 2: Convert to fraction form
    65,488.78/90,374.64 = 37,194.47/x
  3. Step 3: Cross multiply
    65,488.78x = 90,374.64 × 37,194.47
  4. Step 4: Simplify right side
    65,488.78x = 3,361,436,583.79
  5. Step 5: Solve for x
    x = 3,361,436,583.79/65,488.78
  6. Step 6: Final answer
    x = 51,328.43

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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.