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Finding the Fourth Proportional to 64,705.82, 97,191.57 and 42,550.70

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Solution

The fourth proportional to 64,705.82, 97,191.57 and 42,550.70 is: 63,913.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,705.82 : 97,191.57 = 42,550.70 : x
  2. Step 2: Convert to fraction form
    64,705.82/97,191.57 = 42,550.70/x
  3. Step 3: Cross multiply
    64,705.82x = 97,191.57 × 42,550.70
  4. Step 4: Simplify right side
    64,705.82x = 4,135,569,337.60
  5. Step 5: Solve for x
    x = 4,135,569,337.60/64,705.82
  6. Step 6: Final answer
    x = 63,913.41

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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.