Home / 58,644.64-80,939.28-39,769.12

Finding the Fourth Proportional to 58,644.64, 80,939.28 and 39,769.12

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Solution

The fourth proportional to 58,644.64, 80,939.28 and 39,769.12 is: 54,887.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,644.64 : 80,939.28 = 39,769.12 : x
  2. Step 2: Convert to fraction form
    58,644.64/80,939.28 = 39,769.12/x
  3. Step 3: Cross multiply
    58,644.64x = 80,939.28 × 39,769.12
  4. Step 4: Simplify right side
    58,644.64x = 3,218,883,939.03
  5. Step 5: Solve for x
    x = 3,218,883,939.03/58,644.64
  6. Step 6: Final answer
    x = 54,887.95

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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.