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Finding the Fourth Proportional to 105,552.88, 145,663.44 and 57,806.56

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Solution

The fourth proportional to 105,552.88, 145,663.44 and 57,806.56 is: 79,773.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,552.88 : 145,663.44 = 57,806.56 : x
  2. Step 2: Convert to fraction form
    105,552.88/145,663.44 = 57,806.56/x
  3. Step 3: Cross multiply
    105,552.88x = 145,663.44 × 57,806.56
  4. Step 4: Simplify right side
    105,552.88x = 8,420,302,384.17
  5. Step 5: Solve for x
    x = 8,420,302,384.17/105,552.88
  6. Step 6: Final answer
    x = 79,773.31

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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.