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Finding the Fourth Proportional to 64,419.92, 88,904.92 and 36,130.96

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Solution

The fourth proportional to 64,419.92, 88,904.92 and 36,130.96 is: 49,863.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,419.92 : 88,904.92 = 36,130.96 : x
  2. Step 2: Convert to fraction form
    64,419.92/88,904.92 = 36,130.96/x
  3. Step 3: Cross multiply
    64,419.92x = 88,904.92 × 36,130.96
  4. Step 4: Simplify right side
    64,419.92x = 3,212,220,108.32
  5. Step 5: Solve for x
    x = 3,212,220,108.32/64,419.92
  6. Step 6: Final answer
    x = 49,863.77

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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.