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Finding the Fourth Proportional to 64,804.80, 89,429.20 and 36,124.40

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Solution

The fourth proportional to 64,804.80, 89,429.20 and 36,124.40 is: 49,850.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,804.80 : 89,429.20 = 36,124.40 : x
  2. Step 2: Convert to fraction form
    64,804.80/89,429.20 = 36,124.40/x
  3. Step 3: Cross multiply
    64,804.80x = 89,429.20 × 36,124.40
  4. Step 4: Simplify right side
    64,804.80x = 3,230,576,192.48
  5. Step 5: Solve for x
    x = 3,230,576,192.48/64,804.80
  6. Step 6: Final answer
    x = 49,850.88

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.