Home / 74,235.40-111,353.10-68,986.60

Finding the Fourth Proportional to 74,235.40, 111,353.10 and 68,986.60

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Solution

The fourth proportional to 74,235.40, 111,353.10 and 68,986.60 is: 103,479.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,235.40 : 111,353.10 = 68,986.60 : x
  2. Step 2: Convert to fraction form
    74,235.40/111,353.10 = 68,986.60/x
  3. Step 3: Cross multiply
    74,235.40x = 111,353.10 × 68,986.60
  4. Step 4: Simplify right side
    74,235.40x = 7,681,871,768.46
  5. Step 5: Solve for x
    x = 7,681,871,768.46/74,235.40
  6. Step 6: Final answer
    x = 103,479.90

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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.