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Finding the Fourth Proportional to 92,875.77, 128,201.27 and 55,149.75

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Solution

The fourth proportional to 92,875.77, 128,201.27 and 55,149.75 is: 76,126.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,875.77 : 128,201.27 = 55,149.75 : x
  2. Step 2: Convert to fraction form
    92,875.77/128,201.27 = 55,149.75/x
  3. Step 3: Cross multiply
    92,875.77x = 128,201.27 × 55,149.75
  4. Step 4: Simplify right side
    92,875.77x = 7,070,267,714.43
  5. Step 5: Solve for x
    x = 7,070,267,714.43/92,875.77
  6. Step 6: Final answer
    x = 76,126.07

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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.