Home / 105,356.94-145,397.98-57,609.78

Finding the Fourth Proportional to 105,356.94, 145,397.98 and 57,609.78

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Solution

The fourth proportional to 105,356.94, 145,397.98 and 57,609.78 is: 79,504.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,356.94 : 145,397.98 = 57,609.78 : x
  2. Step 2: Convert to fraction form
    105,356.94/145,397.98 = 57,609.78/x
  3. Step 3: Cross multiply
    105,356.94x = 145,397.98 × 57,609.78
  4. Step 4: Simplify right side
    105,356.94x = 8,376,345,640.24
  5. Step 5: Solve for x
    x = 8,376,345,640.24/105,356.94
  6. Step 6: Final answer
    x = 79,504.45

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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.