Home / 74,588.40-111,871.80-21,995.28

Finding the Fourth Proportional to 74,588.40, 111,871.80 and 21,995.28

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Solution

The fourth proportional to 74,588.40, 111,871.80 and 21,995.28 is: 32,989.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,588.40 : 111,871.80 = 21,995.28 : x
  2. Step 2: Convert to fraction form
    74,588.40/111,871.80 = 21,995.28/x
  3. Step 3: Cross multiply
    74,588.40x = 111,871.80 × 21,995.28
  4. Step 4: Simplify right side
    74,588.40x = 2,460,651,565.10
  5. Step 5: Solve for x
    x = 2,460,651,565.10/74,588.40
  6. Step 6: Final answer
    x = 32,989.74

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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.