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Finding the Fourth Proportional to 70,770.63, 97,664.43 and 38,505.63

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Solution

The fourth proportional to 70,770.63, 97,664.43 and 38,505.63 is: 53,138.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,770.63 : 97,664.43 = 38,505.63 : x
  2. Step 2: Convert to fraction form
    70,770.63/97,664.43 = 38,505.63/x
  3. Step 3: Cross multiply
    70,770.63x = 97,664.43 × 38,505.63
  4. Step 4: Simplify right side
    70,770.63x = 3,760,630,405.74
  5. Step 5: Solve for x
    x = 3,760,630,405.74/70,770.63
  6. Step 6: Final answer
    x = 53,138.29

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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.