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Finding the Fourth Proportional to 64,640.70, 96,975.63 and 26,688.96

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Solution

The fourth proportional to 64,640.70, 96,975.63 and 26,688.96 is: 40,039.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,640.70 : 96,975.63 = 26,688.96 : x
  2. Step 2: Convert to fraction form
    64,640.70/96,975.63 = 26,688.96/x
  3. Step 3: Cross multiply
    64,640.70x = 96,975.63 × 26,688.96
  4. Step 4: Simplify right side
    64,640.70x = 2,588,178,710.04
  5. Step 5: Solve for x
    x = 2,588,178,710.04/64,640.70
  6. Step 6: Final answer
    x = 40,039.46

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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.