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Finding the Fourth Proportional to 70,953.25, 97,914.95 and 38,688.42

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Solution

The fourth proportional to 70,953.25, 97,914.95 and 38,688.42 is: 53,389.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,953.25 : 97,914.95 = 38,688.42 : x
  2. Step 2: Convert to fraction form
    70,953.25/97,914.95 = 38,688.42/x
  3. Step 3: Cross multiply
    70,953.25x = 97,914.95 × 38,688.42
  4. Step 4: Simplify right side
    70,953.25x = 3,788,174,690.01
  5. Step 5: Solve for x
    x = 3,788,174,690.01/70,953.25
  6. Step 6: Final answer
    x = 53,389.73

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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.