Home / 75,626.28-104,392.74-56,817.72

Finding the Fourth Proportional to 75,626.28, 104,392.74 and 56,817.72

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Solution

The fourth proportional to 75,626.28, 104,392.74 and 56,817.72 is: 78,429.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,626.28 : 104,392.74 = 56,817.72 : x
  2. Step 2: Convert to fraction form
    75,626.28/104,392.74 = 56,817.72/x
  3. Step 3: Cross multiply
    75,626.28x = 104,392.74 × 56,817.72
  4. Step 4: Simplify right side
    75,626.28x = 5,931,357,471.35
  5. Step 5: Solve for x
    x = 5,931,357,471.35/75,626.28
  6. Step 6: Final answer
    x = 78,429.85

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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.