Home / 65,880.12-98,790.30-28,422.48

Finding the Fourth Proportional to 65,880.12, 98,790.30 and 28,422.48

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Solution

The fourth proportional to 65,880.12, 98,790.30 and 28,422.48 is: 42,620.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,880.12 : 98,790.30 = 28,422.48 : x
  2. Step 2: Convert to fraction form
    65,880.12/98,790.30 = 28,422.48/x
  3. Step 3: Cross multiply
    65,880.12x = 98,790.30 × 28,422.48
  4. Step 4: Simplify right side
    65,880.12x = 2,807,865,325.94
  5. Step 5: Solve for x
    x = 2,807,865,325.94/65,880.12
  6. Step 6: Final answer
    x = 42,620.83

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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.