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Finding the Fourth Proportional to 53,663.60, 80,509.80 and 47,860.40

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Solution

The fourth proportional to 53,663.60, 80,509.80 and 47,860.40 is: 71,803.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,663.60 : 80,509.80 = 47,860.40 : x
  2. Step 2: Convert to fraction form
    53,663.60/80,509.80 = 47,860.40/x
  3. Step 3: Cross multiply
    53,663.60x = 80,509.80 × 47,860.40
  4. Step 4: Simplify right side
    53,663.60x = 3,853,231,231.92
  5. Step 5: Solve for x
    x = 3,853,231,231.92/53,663.60
  6. Step 6: Final answer
    x = 71,803.44

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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.