Home / 105,482.18-145,565.57-57,738.56

Finding the Fourth Proportional to 105,482.18, 145,565.57 and 57,738.56

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Solution

The fourth proportional to 105,482.18, 145,565.57 and 57,738.56 is: 79,679.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,482.18 : 145,565.57 = 57,738.56 : x
  2. Step 2: Convert to fraction form
    105,482.18/145,565.57 = 57,738.56/x
  3. Step 3: Cross multiply
    105,482.18x = 145,565.57 × 57,738.56
  4. Step 4: Simplify right side
    105,482.18x = 8,404,745,813.90
  5. Step 5: Solve for x
    x = 8,404,745,813.90/105,482.18
  6. Step 6: Final answer
    x = 79,679.29

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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.