Home / 72,782.04-109,168.14-28,400.52

Finding the Fourth Proportional to 72,782.04, 109,168.14 and 28,400.52

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Solution

The fourth proportional to 72,782.04, 109,168.14 and 28,400.52 is: 42,598.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,782.04 : 109,168.14 = 28,400.52 : x
  2. Step 2: Convert to fraction form
    72,782.04/109,168.14 = 28,400.52/x
  3. Step 3: Cross multiply
    72,782.04x = 109,168.14 × 28,400.52
  4. Step 4: Simplify right side
    72,782.04x = 3,100,431,943.43
  5. Step 5: Solve for x
    x = 3,100,431,943.43/72,782.04
  6. Step 6: Final answer
    x = 42,598.86

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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.