Home / 65,149.32-89,890.38-38,289.72

Finding the Fourth Proportional to 65,149.32, 89,890.38 and 38,289.72

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Solution

The fourth proportional to 65,149.32, 89,890.38 and 38,289.72 is: 52,830.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,149.32 : 89,890.38 = 38,289.72 : x
  2. Step 2: Convert to fraction form
    65,149.32/89,890.38 = 38,289.72/x
  3. Step 3: Cross multiply
    65,149.32x = 89,890.38 × 38,289.72
  4. Step 4: Simplify right side
    65,149.32x = 3,441,877,480.89
  5. Step 5: Solve for x
    x = 3,441,877,480.89/65,149.32
  6. Step 6: Final answer
    x = 52,830.60

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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.