Home / 85,819.56-118,429-47,578.92

Finding the Fourth Proportional to 85,819.56, 118,429 and 47,578.92

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Solution

The fourth proportional to 85,819.56, 118,429 and 47,578.92 is: 65,657.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,819.56 : 118,429 = 47,578.92 : x
  2. Step 2: Convert to fraction form
    85,819.56/118,429 = 47,578.92/x
  3. Step 3: Cross multiply
    85,819.56x = 118,429 × 47,578.92
  4. Step 4: Simplify right side
    85,819.56x = 5,634,723,916.68
  5. Step 5: Solve for x
    x = 5,634,723,916.68/85,819.56
  6. Step 6: Final answer
    x = 65,657.80

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1.5x scale

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.