Home / 78,414.28-117,627.80-47,038.73

Finding the Fourth Proportional to 78,414.28, 117,627.80 and 47,038.73

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Solution

The fourth proportional to 78,414.28, 117,627.80 and 47,038.73 is: 70,561.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,414.28 : 117,627.80 = 47,038.73 : x
  2. Step 2: Convert to fraction form
    78,414.28/117,627.80 = 47,038.73/x
  3. Step 3: Cross multiply
    78,414.28x = 117,627.80 × 47,038.73
  4. Step 4: Simplify right side
    78,414.28x = 5,533,061,501.36
  5. Step 5: Solve for x
    x = 5,533,061,501.36/78,414.28
  6. Step 6: Final answer
    x = 70,561.91

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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.