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Finding the Fourth Proportional to 93,830.88, 129,486.62 and 51,390.93

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Solution

The fourth proportional to 93,830.88, 129,486.62 and 51,390.93 is: 70,919.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,830.88 : 129,486.62 = 51,390.93 : x
  2. Step 2: Convert to fraction form
    93,830.88/129,486.62 = 51,390.93/x
  3. Step 3: Cross multiply
    93,830.88x = 129,486.62 × 51,390.93
  4. Step 4: Simplify right side
    93,830.88x = 6,654,436,919.97
  5. Step 5: Solve for x
    x = 6,654,436,919.97/93,830.88
  6. Step 6: Final answer
    x = 70,919.48

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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.