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Finding the Fourth Proportional to 56,244, 77,618.34 and 31,095.12

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Solution

The fourth proportional to 56,244, 77,618.34 and 31,095.12 is: 42,912.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,244 : 77,618.34 = 31,095.12 : x
  2. Step 2: Convert to fraction form
    56,244/77,618.34 = 31,095.12/x
  3. Step 3: Cross multiply
    56,244x = 77,618.34 × 31,095.12
  4. Step 4: Simplify right side
    56,244x = 2,413,551,596.50
  5. Step 5: Solve for x
    x = 2,413,551,596.50/56,244
  6. Step 6: Final answer
    x = 42,912.16

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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.