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Finding the Fourth Proportional to 64,049.72, 96,072.50 and 28,989.40

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Solution

The fourth proportional to 64,049.72, 96,072.50 and 28,989.40 is: 43,483.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,049.72 : 96,072.50 = 28,989.40 : x
  2. Step 2: Convert to fraction form
    64,049.72/96,072.50 = 28,989.40/x
  3. Step 3: Cross multiply
    64,049.72x = 96,072.50 × 28,989.40
  4. Step 4: Simplify right side
    64,049.72x = 2,785,084,131.50
  5. Step 5: Solve for x
    x = 2,785,084,131.50/64,049.72
  6. Step 6: Final answer
    x = 43,483.16

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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.