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Finding the Fourth Proportional to 52,760.40, 72,808.86 and 28,886.86

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Solution

The fourth proportional to 52,760.40, 72,808.86 and 28,886.86 is: 39,863.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,760.40 : 72,808.86 = 28,886.86 : x
  2. Step 2: Convert to fraction form
    52,760.40/72,808.86 = 28,886.86/x
  3. Step 3: Cross multiply
    52,760.40x = 72,808.86 × 28,886.86
  4. Step 4: Simplify right side
    52,760.40x = 2,103,219,345.58
  5. Step 5: Solve for x
    x = 2,103,219,345.58/52,760.40
  6. Step 6: Final answer
    x = 39,863.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.