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Finding the Fourth Proportional to 64,991.60, 97,341.60 and 53,327.60

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Solution

The fourth proportional to 64,991.60, 97,341.60 and 53,327.60 is: 79,871.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,991.60 : 97,341.60 = 53,327.60 : x
  2. Step 2: Convert to fraction form
    64,991.60/97,341.60 = 53,327.60/x
  3. Step 3: Cross multiply
    64,991.60x = 97,341.60 × 53,327.60
  4. Step 4: Simplify right side
    64,991.60x = 5,190,993,908.16
  5. Step 5: Solve for x
    x = 5,190,993,908.16/64,991.60
  6. Step 6: Final answer
    x = 79,871.77

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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.