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Finding the Fourth Proportional to 64,495.52, 89,009.22 and 37,639.78

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Solution

The fourth proportional to 64,495.52, 89,009.22 and 37,639.78 is: 51,946.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,495.52 : 89,009.22 = 37,639.78 : x
  2. Step 2: Convert to fraction form
    64,495.52/89,009.22 = 37,639.78/x
  3. Step 3: Cross multiply
    64,495.52x = 89,009.22 × 37,639.78
  4. Step 4: Simplify right side
    64,495.52x = 3,350,287,458.77
  5. Step 5: Solve for x
    x = 3,350,287,458.77/64,495.52
  6. Step 6: Final answer
    x = 51,946.05

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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.