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Finding the Fourth Proportional to 70,800.43, 97,703.83 and 38,968.64

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Solution

The fourth proportional to 70,800.43, 97,703.83 and 38,968.64 is: 53,776.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,800.43 : 97,703.83 = 38,968.64 : x
  2. Step 2: Convert to fraction form
    70,800.43/97,703.83 = 38,968.64/x
  3. Step 3: Cross multiply
    70,800.43x = 97,703.83 × 38,968.64
  4. Step 4: Simplify right side
    70,800.43x = 3,807,385,377.89
  5. Step 5: Solve for x
    x = 3,807,385,377.89/70,800.43
  6. Step 6: Final answer
    x = 53,776.30

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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.