Home / 75,622.80-104,503.40-56,727.12

Finding the Fourth Proportional to 75,622.80, 104,503.40 and 56,727.12

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Solution

The fourth proportional to 75,622.80, 104,503.40 and 56,727.12 is: 78,391.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,622.80 : 104,503.40 = 56,727.12 : x
  2. Step 2: Convert to fraction form
    75,622.80/104,503.40 = 56,727.12/x
  3. Step 3: Cross multiply
    75,622.80x = 104,503.40 × 56,727.12
  4. Step 4: Simplify right side
    75,622.80x = 5,928,176,912.21
  5. Step 5: Solve for x
    x = 5,928,176,912.21/75,622.80
  6. Step 6: Final answer
    x = 78,391.40

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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.