Home / 72,201.74-99,638.39-40,370.63

Finding the Fourth Proportional to 72,201.74, 99,638.39 and 40,370.63

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Solution

The fourth proportional to 72,201.74, 99,638.39 and 40,370.63 is: 55,711.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,201.74 : 99,638.39 = 40,370.63 : x
  2. Step 2: Convert to fraction form
    72,201.74/99,638.39 = 40,370.63/x
  3. Step 3: Cross multiply
    72,201.74x = 99,638.39 × 40,370.63
  4. Step 4: Simplify right side
    72,201.74x = 4,022,464,179.22
  5. Step 5: Solve for x
    x = 4,022,464,179.22/72,201.74
  6. Step 6: Final answer
    x = 55,711.46

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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.