Home / 72,455.10-108,701.55-28,083.30

Finding the Fourth Proportional to 72,455.10, 108,701.55 and 28,083.30

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Solution

The fourth proportional to 72,455.10, 108,701.55 and 28,083.30 is: 42,132.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,455.10 : 108,701.55 = 28,083.30 : x
  2. Step 2: Convert to fraction form
    72,455.10/108,701.55 = 28,083.30/x
  3. Step 3: Cross multiply
    72,455.10x = 108,701.55 × 28,083.30
  4. Step 4: Simplify right side
    72,455.10x = 3,052,698,239.12
  5. Step 5: Solve for x
    x = 3,052,698,239.12/72,455.10
  6. Step 6: Final answer
    x = 42,132.28

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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.