Home / 105,549.84-145,661.04-57,805.20

Finding the Fourth Proportional to 105,549.84, 145,661.04 and 57,805.20

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Solution

The fourth proportional to 105,549.84, 145,661.04 and 57,805.20 is: 79,772.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,549.84 : 145,661.04 = 57,805.20 : x
  2. Step 2: Convert to fraction form
    105,549.84/145,661.04 = 57,805.20/x
  3. Step 3: Cross multiply
    105,549.84x = 145,661.04 × 57,805.20
  4. Step 4: Simplify right side
    105,549.84x = 8,419,965,549.41
  5. Step 5: Solve for x
    x = 8,419,965,549.41/105,549.84
  6. Step 6: Final answer
    x = 79,772.41

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1.5x scale

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.