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Finding the Fourth Proportional to 70,729.81, 97,605.19 and 38,898.72

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Solution

The fourth proportional to 70,729.81, 97,605.19 and 38,898.72 is: 53,679.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,729.81 : 97,605.19 = 38,898.72 : x
  2. Step 2: Convert to fraction form
    70,729.81/97,605.19 = 38,898.72/x
  3. Step 3: Cross multiply
    70,729.81x = 97,605.19 × 38,898.72
  4. Step 4: Simplify right side
    70,729.81x = 3,796,716,956.36
  5. Step 5: Solve for x
    x = 3,796,716,956.36/70,729.81
  6. Step 6: Final answer
    x = 53,679.16

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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.