Home / 74,769.45-103,156.32-42,500.81

Finding the Fourth Proportional to 74,769.45, 103,156.32 and 42,500.81

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Solution

The fourth proportional to 74,769.45, 103,156.32 and 42,500.81 is: 58,636.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,769.45 : 103,156.32 = 42,500.81 : x
  2. Step 2: Convert to fraction form
    74,769.45/103,156.32 = 42,500.81/x
  3. Step 3: Cross multiply
    74,769.45x = 103,156.32 × 42,500.81
  4. Step 4: Simplify right side
    74,769.45x = 4,384,226,640.84
  5. Step 5: Solve for x
    x = 4,384,226,640.84/74,769.45
  6. Step 6: Final answer
    x = 58,636.60

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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.