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Finding the Fourth Proportional to 64,688.57, 89,274.78 and 36,010.52

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Solution

The fourth proportional to 64,688.57, 89,274.78 and 36,010.52 is: 49,697.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,688.57 : 89,274.78 = 36,010.52 : x
  2. Step 2: Convert to fraction form
    64,688.57/89,274.78 = 36,010.52/x
  3. Step 3: Cross multiply
    64,688.57x = 89,274.78 × 36,010.52
  4. Step 4: Simplify right side
    64,688.57x = 3,214,830,804.31
  5. Step 5: Solve for x
    x = 3,214,830,804.31/64,688.57
  6. Step 6: Final answer
    x = 49,697.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.