Home / 105,310.44-145,330.50-57,565.80

Finding the Fourth Proportional to 105,310.44, 145,330.50 and 57,565.80

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Solution

The fourth proportional to 105,310.44, 145,330.50 and 57,565.80 is: 79,441.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,310.44 : 145,330.50 = 57,565.80 : x
  2. Step 2: Convert to fraction form
    105,310.44/145,330.50 = 57,565.80/x
  3. Step 3: Cross multiply
    105,310.44x = 145,330.50 × 57,565.80
  4. Step 4: Simplify right side
    105,310.44x = 8,366,066,496.90
  5. Step 5: Solve for x
    x = 8,366,066,496.90/105,310.44
  6. Step 6: Final answer
    x = 79,441.95

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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.