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Finding the Fourth Proportional to 105,560.84, 145,668.54 and 57,804.95

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Solution

The fourth proportional to 105,560.84, 145,668.54 and 57,804.95 is: 79,767.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,560.84 : 145,668.54 = 57,804.95 : x
  2. Step 2: Convert to fraction form
    105,560.84/145,668.54 = 57,804.95/x
  3. Step 3: Cross multiply
    105,560.84x = 145,668.54 × 57,804.95
  4. Step 4: Simplify right side
    105,560.84x = 8,420,362,671.27
  5. Step 5: Solve for x
    x = 8,420,362,671.27/105,560.84
  6. Step 6: Final answer
    x = 79,767.86

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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.