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Finding the Fourth Proportional to 105,616.60, 145,754.30 and 57,873

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Solution

The fourth proportional to 105,616.60, 145,754.30 and 57,873 is: 79,866.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,616.60 : 145,754.30 = 57,873 : x
  2. Step 2: Convert to fraction form
    105,616.60/145,754.30 = 57,873/x
  3. Step 3: Cross multiply
    105,616.60x = 145,754.30 × 57,873
  4. Step 4: Simplify right side
    105,616.60x = 8,435,238,603.90
  5. Step 5: Solve for x
    x = 8,435,238,603.90/105,616.60
  6. Step 6: Final answer
    x = 79,866.60

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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.