Home / 105,527.20-145,627.50-57,780.52

Finding the Fourth Proportional to 105,527.20, 145,627.50 and 57,780.52

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Solution

The fourth proportional to 105,527.20, 145,627.50 and 57,780.52 is: 79,737.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,527.20 : 145,627.50 = 57,780.52 : x
  2. Step 2: Convert to fraction form
    105,527.20/145,627.50 = 57,780.52/x
  3. Step 3: Cross multiply
    105,527.20x = 145,627.50 × 57,780.52
  4. Step 4: Simplify right side
    105,527.20x = 8,414,432,676.30
  5. Step 5: Solve for x
    x = 8,414,432,676.30/105,527.20
  6. Step 6: Final answer
    x = 79,737.10

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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.