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Finding the Fourth Proportional to 60,444.80, 90,645.60 and 21,003.20

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Solution

The fourth proportional to 60,444.80, 90,645.60 and 21,003.20 is: 31,497.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,444.80 : 90,645.60 = 21,003.20 : x
  2. Step 2: Convert to fraction form
    60,444.80/90,645.60 = 21,003.20/x
  3. Step 3: Cross multiply
    60,444.80x = 90,645.60 × 21,003.20
  4. Step 4: Simplify right side
    60,444.80x = 1,903,847,665.92
  5. Step 5: Solve for x
    x = 1,903,847,665.92/60,444.80
  6. Step 6: Final answer
    x = 31,497.29

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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.