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Finding the Fourth Proportional to 64,259.63, 96,393.95 and 19,880.54

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Solution

The fourth proportional to 64,259.63, 96,393.95 and 19,880.54 is: 29,822.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,259.63 : 96,393.95 = 19,880.54 : x
  2. Step 2: Convert to fraction form
    64,259.63/96,393.95 = 19,880.54/x
  3. Step 3: Cross multiply
    64,259.63x = 96,393.95 × 19,880.54
  4. Step 4: Simplify right side
    64,259.63x = 1,916,363,633.39
  5. Step 5: Solve for x
    x = 1,916,363,633.39/64,259.63
  6. Step 6: Final answer
    x = 29,822.20

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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.