Home / 105,392.80-145,442.10-57,650.56

Finding the Fourth Proportional to 105,392.80, 145,442.10 and 57,650.56

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Solution

The fourth proportional to 105,392.80, 145,442.10 and 57,650.56 is: 79,557.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,392.80 : 145,442.10 = 57,650.56 : x
  2. Step 2: Convert to fraction form
    105,392.80/145,442.10 = 57,650.56/x
  3. Step 3: Cross multiply
    105,392.80x = 145,442.10 × 57,650.56
  4. Step 4: Simplify right side
    105,392.80x = 8,384,818,512.58
  5. Step 5: Solve for x
    x = 8,384,818,512.58/105,392.80
  6. Step 6: Final answer
    x = 79,557.79

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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.