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Finding the Fourth Proportional to 92,876.77, 128,202.65 and 55,150.75

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Solution

The fourth proportional to 92,876.77, 128,202.65 and 55,150.75 is: 76,127.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,876.77 : 128,202.65 = 55,150.75 : x
  2. Step 2: Convert to fraction form
    92,876.77/128,202.65 = 55,150.75/x
  3. Step 3: Cross multiply
    92,876.77x = 128,202.65 × 55,150.75
  4. Step 4: Simplify right side
    92,876.77x = 7,070,472,299.49
  5. Step 5: Solve for x
    x = 7,070,472,299.49/92,876.77
  6. Step 6: Final answer
    x = 76,127.46

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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.