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Finding the Fourth Proportional to 93,751.48, 129,380.34 and 51,310

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Solution

The fourth proportional to 93,751.48, 129,380.34 and 51,310 is: 70,809.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,751.48 : 129,380.34 = 51,310 : x
  2. Step 2: Convert to fraction form
    93,751.48/129,380.34 = 51,310/x
  3. Step 3: Cross multiply
    93,751.48x = 129,380.34 × 51,310
  4. Step 4: Simplify right side
    93,751.48x = 6,638,505,245.40
  5. Step 5: Solve for x
    x = 6,638,505,245.40/93,751.48
  6. Step 6: Final answer
    x = 70,809.60

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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.