Home / 83,666.98-115,419.90-55,396.36

Finding the Fourth Proportional to 83,666.98, 115,419.90 and 55,396.36

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Solution

The fourth proportional to 83,666.98, 115,419.90 and 55,396.36 is: 76,420.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,666.98 : 115,419.90 = 55,396.36 : x
  2. Step 2: Convert to fraction form
    83,666.98/115,419.90 = 55,396.36/x
  3. Step 3: Cross multiply
    83,666.98x = 115,419.90 × 55,396.36
  4. Step 4: Simplify right side
    83,666.98x = 6,393,842,331.56
  5. Step 5: Solve for x
    x = 6,393,842,331.56/83,666.98
  6. Step 6: Final answer
    x = 76,420.14

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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.