Home / 74,772.45-103,160.46-42,503.79

Finding the Fourth Proportional to 74,772.45, 103,160.46 and 42,503.79

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Solution

The fourth proportional to 74,772.45, 103,160.46 and 42,503.79 is: 58,640.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,772.45 : 103,160.46 = 42,503.79 : x
  2. Step 2: Convert to fraction form
    74,772.45/103,160.46 = 42,503.79/x
  3. Step 3: Cross multiply
    74,772.45x = 103,160.46 × 42,503.79
  4. Step 4: Simplify right side
    74,772.45x = 4,384,710,528.14
  5. Step 5: Solve for x
    x = 4,384,710,528.14/74,772.45
  6. Step 6: Final answer
    x = 58,640.72

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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.