Home / 83,631.72-115,372.98-53,401.62

Finding the Fourth Proportional to 83,631.72, 115,372.98 and 53,401.62

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Solution

The fourth proportional to 83,631.72, 115,372.98 and 53,401.62 is: 73,669.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,631.72 : 115,372.98 = 53,401.62 : x
  2. Step 2: Convert to fraction form
    83,631.72/115,372.98 = 53,401.62/x
  3. Step 3: Cross multiply
    83,631.72x = 115,372.98 × 53,401.62
  4. Step 4: Simplify right side
    83,631.72x = 6,161,104,036.23
  5. Step 5: Solve for x
    x = 6,161,104,036.23/83,631.72
  6. Step 6: Final answer
    x = 73,669.46

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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.