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Finding the Fourth Proportional to 101,609.71, 140,219.56 and 56,287.55

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Solution

The fourth proportional to 101,609.71, 140,219.56 and 56,287.55 is: 77,675.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,609.71 : 140,219.56 = 56,287.55 : x
  2. Step 2: Convert to fraction form
    101,609.71/140,219.56 = 56,287.55/x
  3. Step 3: Cross multiply
    101,609.71x = 140,219.56 × 56,287.55
  4. Step 4: Simplify right side
    101,609.71x = 7,892,615,494.48
  5. Step 5: Solve for x
    x = 7,892,615,494.48/101,609.71
  6. Step 6: Final answer
    x = 77,675.80

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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.