Home / 74,555.65-102,889.62-42,730.69

Finding the Fourth Proportional to 74,555.65, 102,889.62 and 42,730.69

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Solution

The fourth proportional to 74,555.65, 102,889.62 and 42,730.69 is: 58,969.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,555.65 : 102,889.62 = 42,730.69 : x
  2. Step 2: Convert to fraction form
    74,555.65/102,889.62 = 42,730.69/x
  3. Step 3: Cross multiply
    74,555.65x = 102,889.62 × 42,730.69
  4. Step 4: Simplify right side
    74,555.65x = 4,396,543,941.99
  5. Step 5: Solve for x
    x = 4,396,543,941.99/74,555.65
  6. Step 6: Final answer
    x = 58,969.97

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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.