Home / 72,616.77-100,219.68-40,785.53

Finding the Fourth Proportional to 72,616.77, 100,219.68 and 40,785.53

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Solution

The fourth proportional to 72,616.77, 100,219.68 and 40,785.53 is: 56,288.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,616.77 : 100,219.68 = 40,785.53 : x
  2. Step 2: Convert to fraction form
    72,616.77/100,219.68 = 40,785.53/x
  3. Step 3: Cross multiply
    72,616.77x = 100,219.68 × 40,785.53
  4. Step 4: Simplify right side
    72,616.77x = 4,087,512,264.13
  5. Step 5: Solve for x
    x = 4,087,512,264.13/72,616.77
  6. Step 6: Final answer
    x = 56,288.82

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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.