Home / 105,572.46-145,690-57,825.92

Finding the Fourth Proportional to 105,572.46, 145,690 and 57,825.92

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Solution

The fourth proportional to 105,572.46, 145,690 and 57,825.92 is: 79,799.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,572.46 : 145,690 = 57,825.92 : x
  2. Step 2: Convert to fraction form
    105,572.46/145,690 = 57,825.92/x
  3. Step 3: Cross multiply
    105,572.46x = 145,690 × 57,825.92
  4. Step 4: Simplify right side
    105,572.46x = 8,424,658,284.80
  5. Step 5: Solve for x
    x = 8,424,658,284.80/105,572.46
  6. Step 6: Final answer
    x = 79,799.77

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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.