Home / 72,151.60-99,568.92-40,320.49

Finding the Fourth Proportional to 72,151.60, 99,568.92 and 40,320.49

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Solution

The fourth proportional to 72,151.60, 99,568.92 and 40,320.49 is: 55,642.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,151.60 : 99,568.92 = 40,320.49 : x
  2. Step 2: Convert to fraction form
    72,151.60/99,568.92 = 40,320.49/x
  3. Step 3: Cross multiply
    72,151.60x = 99,568.92 × 40,320.49
  4. Step 4: Simplify right side
    72,151.60x = 4,014,667,643.17
  5. Step 5: Solve for x
    x = 4,014,667,643.17/72,151.60
  6. Step 6: Final answer
    x = 55,642.12

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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.