Home / 56,145.20-84,250.20-21,088.40

Finding the Fourth Proportional to 56,145.20, 84,250.20 and 21,088.40

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Solution

The fourth proportional to 56,145.20, 84,250.20 and 21,088.40 is: 31,644.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,145.20 : 84,250.20 = 21,088.40 : x
  2. Step 2: Convert to fraction form
    56,145.20/84,250.20 = 21,088.40/x
  3. Step 3: Cross multiply
    56,145.20x = 84,250.20 × 21,088.40
  4. Step 4: Simplify right side
    56,145.20x = 1,776,701,917.68
  5. Step 5: Solve for x
    x = 1,776,701,917.68/56,145.20
  6. Step 6: Final answer
    x = 31,644.77

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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.