Home / 72,037.64-99,403.62-40,207.40

Finding the Fourth Proportional to 72,037.64, 99,403.62 and 40,207.40

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Solution

The fourth proportional to 72,037.64, 99,403.62 and 40,207.40 is: 55,481.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,037.64 : 99,403.62 = 40,207.40 : x
  2. Step 2: Convert to fraction form
    72,037.64/99,403.62 = 40,207.40/x
  3. Step 3: Cross multiply
    72,037.64x = 99,403.62 × 40,207.40
  4. Step 4: Simplify right side
    72,037.64x = 3,996,761,110.79
  5. Step 5: Solve for x
    x = 3,996,761,110.79/72,037.64
  6. Step 6: Final answer
    x = 55,481.57

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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.