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Finding the Fourth Proportional to 92,875.52, 128,200.92 and 55,149.50

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Solution

The fourth proportional to 92,875.52, 128,200.92 and 55,149.50 is: 76,125.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,875.52 : 128,200.92 = 55,149.50 : x
  2. Step 2: Convert to fraction form
    92,875.52/128,200.92 = 55,149.50/x
  3. Step 3: Cross multiply
    92,875.52x = 128,200.92 × 55,149.50
  4. Step 4: Simplify right side
    92,875.52x = 7,070,216,637.54
  5. Step 5: Solve for x
    x = 7,070,216,637.54/92,875.52
  6. Step 6: Final answer
    x = 76,125.73

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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.