Home / 72,515.55-100,077.48-40,253.21

Finding the Fourth Proportional to 72,515.55, 100,077.48 and 40,253.21

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Solution

The fourth proportional to 72,515.55, 100,077.48 and 40,253.21 is: 55,552.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,515.55 : 100,077.48 = 40,253.21 : x
  2. Step 2: Convert to fraction form
    72,515.55/100,077.48 = 40,253.21/x
  3. Step 3: Cross multiply
    72,515.55x = 100,077.48 × 40,253.21
  4. Step 4: Simplify right side
    72,515.55x = 4,028,439,318.32
  5. Step 5: Solve for x
    x = 4,028,439,318.32/72,515.55
  6. Step 6: Final answer
    x = 55,552.77

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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.