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Finding the Fourth Proportional to 65,069.60, 97,458.60 and 53,405.60

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Solution

The fourth proportional to 65,069.60, 97,458.60 and 53,405.60 is: 79,988.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,069.60 : 97,458.60 = 53,405.60 : x
  2. Step 2: Convert to fraction form
    65,069.60/97,458.60 = 53,405.60/x
  3. Step 3: Cross multiply
    65,069.60x = 97,458.60 × 53,405.60
  4. Step 4: Simplify right side
    65,069.60x = 5,204,835,008.16
  5. Step 5: Solve for x
    x = 5,204,835,008.16/65,069.60
  6. Step 6: Final answer
    x = 79,988.74

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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.