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Finding the Fourth Proportional to 70,446.51, 97,218.68 and 38,615.40

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Solution

The fourth proportional to 70,446.51, 97,218.68 and 38,615.40 is: 53,290.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,446.51 : 97,218.68 = 38,615.40 : x
  2. Step 2: Convert to fraction form
    70,446.51/97,218.68 = 38,615.40/x
  3. Step 3: Cross multiply
    70,446.51x = 97,218.68 × 38,615.40
  4. Step 4: Simplify right side
    70,446.51x = 3,754,138,022.60
  5. Step 5: Solve for x
    x = 3,754,138,022.60/70,446.51
  6. Step 6: Final answer
    x = 53,290.62

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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.