Home / 65,631.20-90,710.82-57,856.41

Finding the Fourth Proportional to 65,631.20, 90,710.82 and 57,856.41

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Solution

The fourth proportional to 65,631.20, 90,710.82 and 57,856.41 is: 79,965.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,631.20 : 90,710.82 = 57,856.41 : x
  2. Step 2: Convert to fraction form
    65,631.20/90,710.82 = 57,856.41/x
  3. Step 3: Cross multiply
    65,631.20x = 90,710.82 × 57,856.41
  4. Step 4: Simplify right side
    65,631.20x = 5,248,202,393.36
  5. Step 5: Solve for x
    x = 5,248,202,393.36/65,631.20
  6. Step 6: Final answer
    x = 79,965.06

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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.