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Finding the Fourth Proportional to 70,767.81, 97,659.81 and 38,938.68

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Solution

The fourth proportional to 70,767.81, 97,659.81 and 38,938.68 is: 53,735.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,767.81 : 97,659.81 = 38,938.68 : x
  2. Step 2: Convert to fraction form
    70,767.81/97,659.81 = 38,938.68/x
  3. Step 3: Cross multiply
    70,767.81x = 97,659.81 × 38,938.68
  4. Step 4: Simplify right side
    70,767.81x = 3,802,744,090.45
  5. Step 5: Solve for x
    x = 3,802,744,090.45/70,767.81
  6. Step 6: Final answer
    x = 53,735.51

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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.