Home / 82,933.40-124,400.10-20,603.90

Finding the Fourth Proportional to 82,933.40, 124,400.10 and 20,603.90

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Solution

The fourth proportional to 82,933.40, 124,400.10 and 20,603.90 is: 30,905.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,933.40 : 124,400.10 = 20,603.90 : x
  2. Step 2: Convert to fraction form
    82,933.40/124,400.10 = 20,603.90/x
  3. Step 3: Cross multiply
    82,933.40x = 124,400.10 × 20,603.90
  4. Step 4: Simplify right side
    82,933.40x = 2,563,127,220.39
  5. Step 5: Solve for x
    x = 2,563,127,220.39/82,933.40
  6. Step 6: Final answer
    x = 30,905.85

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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.