Home / 74,434.32-102,104.10-72,879.12

Finding the Fourth Proportional to 74,434.32, 102,104.10 and 72,879.12

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Solution

The fourth proportional to 74,434.32, 102,104.10 and 72,879.12 is: 99,970.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,434.32 : 102,104.10 = 72,879.12 : x
  2. Step 2: Convert to fraction form
    74,434.32/102,104.10 = 72,879.12/x
  3. Step 3: Cross multiply
    74,434.32x = 102,104.10 × 72,879.12
  4. Step 4: Simplify right side
    74,434.32x = 7,441,256,956.39
  5. Step 5: Solve for x
    x = 7,441,256,956.39/74,434.32
  6. Step 6: Final answer
    x = 99,970.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.