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Finding the Fourth Proportional to 64,486.48, 96,681 and 42,305.44

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Solution

The fourth proportional to 64,486.48, 96,681 and 42,305.44 is: 63,426.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,486.48 : 96,681 = 42,305.44 : x
  2. Step 2: Convert to fraction form
    64,486.48/96,681 = 42,305.44/x
  3. Step 3: Cross multiply
    64,486.48x = 96,681 × 42,305.44
  4. Step 4: Simplify right side
    64,486.48x = 4,090,132,244.64
  5. Step 5: Solve for x
    x = 4,090,132,244.64/64,486.48
  6. Step 6: Final answer
    x = 63,426.20

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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.