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Finding the Fourth Proportional to 88,778.70, 133,054.65 and 36,128.70

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Solution

The fourth proportional to 88,778.70, 133,054.65 and 36,128.70 is: 54,146.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,778.70 : 133,054.65 = 36,128.70 : x
  2. Step 2: Convert to fraction form
    88,778.70/133,054.65 = 36,128.70/x
  3. Step 3: Cross multiply
    88,778.70x = 133,054.65 × 36,128.70
  4. Step 4: Simplify right side
    88,778.70x = 4,807,091,533.46
  5. Step 5: Solve for x
    x = 4,807,091,533.46/88,778.70
  6. Step 6: Final answer
    x = 54,146.90

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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.