Home / 72,765.32-100,415.99-40,934.24

Finding the Fourth Proportional to 72,765.32, 100,415.99 and 40,934.24

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Solution

The fourth proportional to 72,765.32, 100,415.99 and 40,934.24 is: 56,489.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,765.32 : 100,415.99 = 40,934.24 : x
  2. Step 2: Convert to fraction form
    72,765.32/100,415.99 = 40,934.24/x
  3. Step 3: Cross multiply
    72,765.32x = 100,415.99 × 40,934.24
  4. Step 4: Simplify right side
    72,765.32x = 4,110,452,587.87
  5. Step 5: Solve for x
    x = 4,110,452,587.87/72,765.32
  6. Step 6: Final answer
    x = 56,489.17

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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.