Home / 78,863.81-118,197.26-39,432.20

Finding the Fourth Proportional to 78,863.81, 118,197.26 and 39,432.20

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Solution

The fourth proportional to 78,863.81, 118,197.26 and 39,432.20 is: 59,099.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,863.81 : 118,197.26 = 39,432.20 : x
  2. Step 2: Convert to fraction form
    78,863.81/118,197.26 = 39,432.20/x
  3. Step 3: Cross multiply
    78,863.81x = 118,197.26 × 39,432.20
  4. Step 4: Simplify right side
    78,863.81x = 4,660,777,798.86
  5. Step 5: Solve for x
    x = 4,660,777,798.86/78,863.81
  6. Step 6: Final answer
    x = 59,099.07

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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.