Home / 45,255-67,837.50-21,520.56

Finding the Fourth Proportional to 45,255, 67,837.50 and 21,520.56

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Solution

The fourth proportional to 45,255, 67,837.50 and 21,520.56 is: 32,259.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,255 : 67,837.50 = 21,520.56 : x
  2. Step 2: Convert to fraction form
    45,255/67,837.50 = 21,520.56/x
  3. Step 3: Cross multiply
    45,255x = 67,837.50 × 21,520.56
  4. Step 4: Simplify right side
    45,255x = 1,459,900,989
  5. Step 5: Solve for x
    x = 1,459,900,989/45,255
  6. Step 6: Final answer
    x = 32,259.44

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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.