Home / 73,430.10-110,145.15-69,639.30

Finding the Fourth Proportional to 73,430.10, 110,145.15 and 69,639.30

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Solution

The fourth proportional to 73,430.10, 110,145.15 and 69,639.30 is: 104,458.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,430.10 : 110,145.15 = 69,639.30 : x
  2. Step 2: Convert to fraction form
    73,430.10/110,145.15 = 69,639.30/x
  3. Step 3: Cross multiply
    73,430.10x = 110,145.15 × 69,639.30
  4. Step 4: Simplify right side
    73,430.10x = 7,670,431,144.40
  5. Step 5: Solve for x
    x = 7,670,431,144.40/73,430.10
  6. Step 6: Final answer
    x = 104,458.95

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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.