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Finding the Fourth Proportional to 53,420.70, 80,149.62 and 20,150.30

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Solution

The fourth proportional to 53,420.70, 80,149.62 and 20,150.30 is: 30,232.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,420.70 : 80,149.62 = 20,150.30 : x
  2. Step 2: Convert to fraction form
    53,420.70/80,149.62 = 20,150.30/x
  3. Step 3: Cross multiply
    53,420.70x = 80,149.62 × 20,150.30
  4. Step 4: Simplify right side
    53,420.70x = 1,615,038,887.89
  5. Step 5: Solve for x
    x = 1,615,038,887.89/53,420.70
  6. Step 6: Final answer
    x = 30,232.45

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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.