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Finding the Fourth Proportional to 64,305.60, 96,544.80 and 40,977.60

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Solution

The fourth proportional to 64,305.60, 96,544.80 and 40,977.60 is: 61,521.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,305.60 : 96,544.80 = 40,977.60 : x
  2. Step 2: Convert to fraction form
    64,305.60/96,544.80 = 40,977.60/x
  3. Step 3: Cross multiply
    64,305.60x = 96,544.80 × 40,977.60
  4. Step 4: Simplify right side
    64,305.60x = 3,956,174,196.48
  5. Step 5: Solve for x
    x = 3,956,174,196.48/64,305.60
  6. Step 6: Final answer
    x = 61,521.46

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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.