Home / 72,889.24-109,361.40-28,547.68

Finding the Fourth Proportional to 72,889.24, 109,361.40 and 28,547.68

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Solution

The fourth proportional to 72,889.24, 109,361.40 and 28,547.68 is: 42,832.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,889.24 : 109,361.40 = 28,547.68 : x
  2. Step 2: Convert to fraction form
    72,889.24/109,361.40 = 28,547.68/x
  3. Step 3: Cross multiply
    72,889.24x = 109,361.40 × 28,547.68
  4. Step 4: Simplify right side
    72,889.24x = 3,122,014,251.55
  5. Step 5: Solve for x
    x = 3,122,014,251.55/72,889.24
  6. Step 6: Final answer
    x = 42,832.31

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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.