Home / 75,140.48-103,693.20-43,308.68

Finding the Fourth Proportional to 75,140.48, 103,693.20 and 43,308.68

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Solution

The fourth proportional to 75,140.48, 103,693.20 and 43,308.68 is: 59,765.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,140.48 : 103,693.20 = 43,308.68 : x
  2. Step 2: Convert to fraction form
    75,140.48/103,693.20 = 43,308.68/x
  3. Step 3: Cross multiply
    75,140.48x = 103,693.20 × 43,308.68
  4. Step 4: Simplify right side
    75,140.48x = 4,490,815,616.98
  5. Step 5: Solve for x
    x = 4,490,815,616.98/75,140.48
  6. Step 6: Final answer
    x = 59,765.60

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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.