Home / 105,624.08-145,757.36-57,878

Finding the Fourth Proportional to 105,624.08, 145,757.36 and 57,878

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Solution

The fourth proportional to 105,624.08, 145,757.36 and 57,878 is: 79,869.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,624.08 : 145,757.36 = 57,878 : x
  2. Step 2: Convert to fraction form
    105,624.08/145,757.36 = 57,878/x
  3. Step 3: Cross multiply
    105,624.08x = 145,757.36 × 57,878
  4. Step 4: Simplify right side
    105,624.08x = 8,436,144,482.08
  5. Step 5: Solve for x
    x = 8,436,144,482.08/105,624.08
  6. Step 6: Final answer
    x = 79,869.52

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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.