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Finding the Fourth Proportional to 53,710.40, 80,565.60 and 28,827.20

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Solution

The fourth proportional to 53,710.40, 80,565.60 and 28,827.20 is: 43,240.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,710.40 : 80,565.60 = 28,827.20 : x
  2. Step 2: Convert to fraction form
    53,710.40/80,565.60 = 28,827.20/x
  3. Step 3: Cross multiply
    53,710.40x = 80,565.60 × 28,827.20
  4. Step 4: Simplify right side
    53,710.40x = 2,322,480,664.32
  5. Step 5: Solve for x
    x = 2,322,480,664.32/53,710.40
  6. Step 6: Final answer
    x = 43,240.80

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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.