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Finding the Fourth Proportional to 70,916.36, 97,864.61 and 38,650.99

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Solution

The fourth proportional to 70,916.36, 97,864.61 and 38,650.99 is: 53,338.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,916.36 : 97,864.61 = 38,650.99 : x
  2. Step 2: Convert to fraction form
    70,916.36/97,864.61 = 38,650.99/x
  3. Step 3: Cross multiply
    70,916.36x = 97,864.61 × 38,650.99
  4. Step 4: Simplify right side
    70,916.36x = 3,782,563,808.04
  5. Step 5: Solve for x
    x = 3,782,563,808.04/70,916.36
  6. Step 6: Final answer
    x = 53,338.38

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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.