Home / 70,314.18-105,488.19-28,761.30

Finding the Fourth Proportional to 70,314.18, 105,488.19 and 28,761.30

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Solution

The fourth proportional to 70,314.18, 105,488.19 and 28,761.30 is: 43,148.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,314.18 : 105,488.19 = 28,761.30 : x
  2. Step 2: Convert to fraction form
    70,314.18/105,488.19 = 28,761.30/x
  3. Step 3: Cross multiply
    70,314.18x = 105,488.19 × 28,761.30
  4. Step 4: Simplify right side
    70,314.18x = 3,033,977,479.05
  5. Step 5: Solve for x
    x = 3,033,977,479.05/70,314.18
  6. Step 6: Final answer
    x = 43,148.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.