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Finding the Fourth Proportional to 64,959.60, 97,390.80 and 35,410.80

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Solution

The fourth proportional to 64,959.60, 97,390.80 and 35,410.80 is: 53,089.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,959.60 : 97,390.80 = 35,410.80 : x
  2. Step 2: Convert to fraction form
    64,959.60/97,390.80 = 35,410.80/x
  3. Step 3: Cross multiply
    64,959.60x = 97,390.80 × 35,410.80
  4. Step 4: Simplify right side
    64,959.60x = 3,448,686,140.64
  5. Step 5: Solve for x
    x = 3,448,686,140.64/64,959.60
  6. Step 6: Final answer
    x = 53,089.71

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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.