Home / 78,006.41-107,648.33-42,195.67

Finding the Fourth Proportional to 78,006.41, 107,648.33 and 42,195.67

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Solution

The fourth proportional to 78,006.41, 107,648.33 and 42,195.67 is: 58,229.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,006.41 : 107,648.33 = 42,195.67 : x
  2. Step 2: Convert to fraction form
    78,006.41/107,648.33 = 42,195.67/x
  3. Step 3: Cross multiply
    78,006.41x = 107,648.33 × 42,195.67
  4. Step 4: Simplify right side
    78,006.41x = 4,542,292,928.63
  5. Step 5: Solve for x
    x = 4,542,292,928.63/78,006.41
  6. Step 6: Final answer
    x = 58,229.74

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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.