Home / 74,787.18-103,221.45-42,977.94

Finding the Fourth Proportional to 74,787.18, 103,221.45 and 42,977.94

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Solution

The fourth proportional to 74,787.18, 103,221.45 and 42,977.94 is: 59,318.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,787.18 : 103,221.45 = 42,977.94 : x
  2. Step 2: Convert to fraction form
    74,787.18/103,221.45 = 42,977.94/x
  3. Step 3: Cross multiply
    74,787.18x = 103,221.45 × 42,977.94
  4. Step 4: Simplify right side
    74,787.18x = 4,436,245,284.81
  5. Step 5: Solve for x
    x = 4,436,245,284.81/74,787.18
  6. Step 6: Final answer
    x = 59,318.26

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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.