Home / 65,947.15-90,956.85-56,764.34

Finding the Fourth Proportional to 65,947.15, 90,956.85 and 56,764.34

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Solution

The fourth proportional to 65,947.15, 90,956.85 and 56,764.34 is: 78,291.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,947.15 : 90,956.85 = 56,764.34 : x
  2. Step 2: Convert to fraction form
    65,947.15/90,956.85 = 56,764.34/x
  3. Step 3: Cross multiply
    65,947.15x = 90,956.85 × 56,764.34
  4. Step 4: Simplify right side
    65,947.15x = 5,163,105,558.73
  5. Step 5: Solve for x
    x = 5,163,105,558.73/65,947.15
  6. Step 6: Final answer
    x = 78,291.56

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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.