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Finding the Fourth Proportional to 93,991.32, 129,709.80 and 51,552

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Solution

The fourth proportional to 93,991.32, 129,709.80 and 51,552 is: 71,142.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,991.32 : 129,709.80 = 51,552 : x
  2. Step 2: Convert to fraction form
    93,991.32/129,709.80 = 51,552/x
  3. Step 3: Cross multiply
    93,991.32x = 129,709.80 × 51,552
  4. Step 4: Simplify right side
    93,991.32x = 6,686,799,609.60
  5. Step 5: Solve for x
    x = 6,686,799,609.60/93,991.32
  6. Step 6: Final answer
    x = 71,142.74

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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.