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Finding the Fourth Proportional to 64,989.60, 97,338.60 and 53,325.60

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Solution

The fourth proportional to 64,989.60, 97,338.60 and 53,325.60 is: 79,868.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,989.60 : 97,338.60 = 53,325.60 : x
  2. Step 2: Convert to fraction form
    64,989.60/97,338.60 = 53,325.60/x
  3. Step 3: Cross multiply
    64,989.60x = 97,338.60 × 53,325.60
  4. Step 4: Simplify right side
    64,989.60x = 5,190,639,248.16
  5. Step 5: Solve for x
    x = 5,190,639,248.16/64,989.60
  6. Step 6: Final answer
    x = 79,868.77

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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.