Home / 64,815.60-97,165.80-42,639.60

Finding the Fourth Proportional to 64,815.60, 97,165.80 and 42,639.60

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Solution

The fourth proportional to 64,815.60, 97,165.80 and 42,639.60 is: 63,921.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,815.60 : 97,165.80 = 42,639.60 : x
  2. Step 2: Convert to fraction form
    64,815.60/97,165.80 = 42,639.60/x
  3. Step 3: Cross multiply
    64,815.60x = 97,165.80 × 42,639.60
  4. Step 4: Simplify right side
    64,815.60x = 4,143,110,845.68
  5. Step 5: Solve for x
    x = 4,143,110,845.68/64,815.60
  6. Step 6: Final answer
    x = 63,921.51

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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.