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Finding the Fourth Proportional to 48,011.20, 72,016.80 and 42,827.20

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Solution

The fourth proportional to 48,011.20, 72,016.80 and 42,827.20 is: 64,240.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,011.20 : 72,016.80 = 42,827.20 : x
  2. Step 2: Convert to fraction form
    48,011.20/72,016.80 = 42,827.20/x
  3. Step 3: Cross multiply
    48,011.20x = 72,016.80 × 42,827.20
  4. Step 4: Simplify right side
    48,011.20x = 3,084,277,896.96
  5. Step 5: Solve for x
    x = 3,084,277,896.96/48,011.20
  6. Step 6: Final answer
    x = 64,240.80

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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.