Home / 105,621.75-145,758.02-57,876.92

Finding the Fourth Proportional to 105,621.75, 145,758.02 and 57,876.92

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Solution

The fourth proportional to 105,621.75, 145,758.02 and 57,876.92 is: 79,870.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,621.75 : 145,758.02 = 57,876.92 : x
  2. Step 2: Convert to fraction form
    105,621.75/145,758.02 = 57,876.92/x
  3. Step 3: Cross multiply
    105,621.75x = 145,758.02 × 57,876.92
  4. Step 4: Simplify right side
    105,621.75x = 8,436,024,244.72
  5. Step 5: Solve for x
    x = 8,436,024,244.72/105,621.75
  6. Step 6: Final answer
    x = 79,870.14

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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.