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Finding the Fourth Proportional to 69,339.60, 104,009.40 and 57,529.80

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Solution

The fourth proportional to 69,339.60, 104,009.40 and 57,529.80 is: 86,294.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,339.60 : 104,009.40 = 57,529.80 : x
  2. Step 2: Convert to fraction form
    69,339.60/104,009.40 = 57,529.80/x
  3. Step 3: Cross multiply
    69,339.60x = 104,009.40 × 57,529.80
  4. Step 4: Simplify right side
    69,339.60x = 5,983,639,980.12
  5. Step 5: Solve for x
    x = 5,983,639,980.12/69,339.60
  6. Step 6: Final answer
    x = 86,294.70

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1.5x scale

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.