Home / 74,412.28-102,690.04-40,421.41

Finding the Fourth Proportional to 74,412.28, 102,690.04 and 40,421.41

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Solution

The fourth proportional to 74,412.28, 102,690.04 and 40,421.41 is: 55,782.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,412.28 : 102,690.04 = 40,421.41 : x
  2. Step 2: Convert to fraction form
    74,412.28/102,690.04 = 40,421.41/x
  3. Step 3: Cross multiply
    74,412.28x = 102,690.04 × 40,421.41
  4. Step 4: Simplify right side
    74,412.28x = 4,150,876,209.76
  5. Step 5: Solve for x
    x = 4,150,876,209.76/74,412.28
  6. Step 6: Final answer
    x = 55,782.14

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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.