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Finding the Fourth Proportional to 53,470.80, 80,206.20 and 51,429.60

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Solution

The fourth proportional to 53,470.80, 80,206.20 and 51,429.60 is: 77,144.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,470.80 : 80,206.20 = 51,429.60 : x
  2. Step 2: Convert to fraction form
    53,470.80/80,206.20 = 51,429.60/x
  3. Step 3: Cross multiply
    53,470.80x = 80,206.20 × 51,429.60
  4. Step 4: Simplify right side
    53,470.80x = 4,124,972,783.52
  5. Step 5: Solve for x
    x = 4,124,972,783.52/53,470.80
  6. Step 6: Final answer
    x = 77,144.40

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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.