Home / 74,289.60-111,434.66-18,885.60

Finding the Fourth Proportional to 74,289.60, 111,434.66 and 18,885.60

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Solution

The fourth proportional to 74,289.60, 111,434.66 and 18,885.60 is: 28,328.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,289.60 : 111,434.66 = 18,885.60 : x
  2. Step 2: Convert to fraction form
    74,289.60/111,434.66 = 18,885.60/x
  3. Step 3: Cross multiply
    74,289.60x = 111,434.66 × 18,885.60
  4. Step 4: Simplify right side
    74,289.60x = 2,104,510,414.90
  5. Step 5: Solve for x
    x = 2,104,510,414.90/74,289.60
  6. Step 6: Final answer
    x = 28,328.47

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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.