Home / 74,870.66-103,318.79-40,878.52

Finding the Fourth Proportional to 74,870.66, 103,318.79 and 40,878.52

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Solution

The fourth proportional to 74,870.66, 103,318.79 and 40,878.52 is: 56,410.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,870.66 : 103,318.79 = 40,878.52 : x
  2. Step 2: Convert to fraction form
    74,870.66/103,318.79 = 40,878.52/x
  3. Step 3: Cross multiply
    74,870.66x = 103,318.79 × 40,878.52
  4. Step 4: Simplify right side
    74,870.66x = 4,223,519,067.29
  5. Step 5: Solve for x
    x = 4,223,519,067.29/74,870.66
  6. Step 6: Final answer
    x = 56,410.87

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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.