Home / 72,139.52-99,552.32-40,308.44

Finding the Fourth Proportional to 72,139.52, 99,552.32 and 40,308.44

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Solution

The fourth proportional to 72,139.52, 99,552.32 and 40,308.44 is: 55,625.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,139.52 : 99,552.32 = 40,308.44 : x
  2. Step 2: Convert to fraction form
    72,139.52/99,552.32 = 40,308.44/x
  3. Step 3: Cross multiply
    72,139.52x = 99,552.32 × 40,308.44
  4. Step 4: Simplify right side
    72,139.52x = 4,012,799,236.14
  5. Step 5: Solve for x
    x = 4,012,799,236.14/72,139.52
  6. Step 6: Final answer
    x = 55,625.53

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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.