Home / 40,886.40-61,351.20-18,703.20

Finding the Fourth Proportional to 40,886.40, 61,351.20 and 18,703.20

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Solution

The fourth proportional to 40,886.40, 61,351.20 and 18,703.20 is: 28,064.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,886.40 : 61,351.20 = 18,703.20 : x
  2. Step 2: Convert to fraction form
    40,886.40/61,351.20 = 18,703.20/x
  3. Step 3: Cross multiply
    40,886.40x = 61,351.20 × 18,703.20
  4. Step 4: Simplify right side
    40,886.40x = 1,147,463,763.84
  5. Step 5: Solve for x
    x = 1,147,463,763.84/40,886.40
  6. Step 6: Final answer
    x = 28,064.68

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.