Home / 74,890.20-103,348.36-40,899

Finding the Fourth Proportional to 74,890.20, 103,348.36 and 40,899

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Solution

The fourth proportional to 74,890.20, 103,348.36 and 40,899 is: 56,440.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,890.20 : 103,348.36 = 40,899 : x
  2. Step 2: Convert to fraction form
    74,890.20/103,348.36 = 40,899/x
  3. Step 3: Cross multiply
    74,890.20x = 103,348.36 × 40,899
  4. Step 4: Simplify right side
    74,890.20x = 4,226,844,575.64
  5. Step 5: Solve for x
    x = 4,226,844,575.64/74,890.20
  6. Step 6: Final answer
    x = 56,440.56

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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.