Home / 56,122.20-84,215.70-21,065.40

Finding the Fourth Proportional to 56,122.20, 84,215.70 and 21,065.40

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Solution

The fourth proportional to 56,122.20, 84,215.70 and 21,065.40 is: 31,610.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,122.20 : 84,215.70 = 21,065.40 : x
  2. Step 2: Convert to fraction form
    56,122.20/84,215.70 = 21,065.40/x
  3. Step 3: Cross multiply
    56,122.20x = 84,215.70 × 21,065.40
  4. Step 4: Simplify right side
    56,122.20x = 1,774,037,406.78
  5. Step 5: Solve for x
    x = 1,774,037,406.78/56,122.20
  6. Step 6: Final answer
    x = 31,610.26

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.