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Finding the Fourth Proportional to 64,402.62, 88,910.64 and 38,913.54

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Solution

The fourth proportional to 64,402.62, 88,910.64 and 38,913.54 is: 53,721.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,402.62 : 88,910.64 = 38,913.54 : x
  2. Step 2: Convert to fraction form
    64,402.62/88,910.64 = 38,913.54/x
  3. Step 3: Cross multiply
    64,402.62x = 88,910.64 × 38,913.54
  4. Step 4: Simplify right side
    64,402.62x = 3,459,827,746.07
  5. Step 5: Solve for x
    x = 3,459,827,746.07/64,402.62
  6. Step 6: Final answer
    x = 53,721.85

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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.