Home / 40,878.12-61,317.30-28,361.40

Finding the Fourth Proportional to 40,878.12, 61,317.30 and 28,361.40

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Solution

The fourth proportional to 40,878.12, 61,317.30 and 28,361.40 is: 42,542.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,878.12 : 61,317.30 = 28,361.40 : x
  2. Step 2: Convert to fraction form
    40,878.12/61,317.30 = 28,361.40/x
  3. Step 3: Cross multiply
    40,878.12x = 61,317.30 × 28,361.40
  4. Step 4: Simplify right side
    40,878.12x = 1,739,044,472.22
  5. Step 5: Solve for x
    x = 1,739,044,472.22/40,878.12
  6. Step 6: Final answer
    x = 42,542.18

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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.