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Finding the Fourth Proportional to 70,600.78, 97,430.26 and 38,772.64

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Solution

The fourth proportional to 70,600.78, 97,430.26 and 38,772.64 is: 53,506.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,600.78 : 97,430.26 = 38,772.64 : x
  2. Step 2: Convert to fraction form
    70,600.78/97,430.26 = 38,772.64/x
  3. Step 3: Cross multiply
    70,600.78x = 97,430.26 × 38,772.64
  4. Step 4: Simplify right side
    70,600.78x = 3,777,628,396.09
  5. Step 5: Solve for x
    x = 3,777,628,396.09/70,600.78
  6. Step 6: Final answer
    x = 53,506.89

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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.