Home / 83,381.24-115,083.98-53,159.60

Finding the Fourth Proportional to 83,381.24, 115,083.98 and 53,159.60

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Solution

The fourth proportional to 83,381.24, 115,083.98 and 53,159.60 is: 73,371.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,381.24 : 115,083.98 = 53,159.60 : x
  2. Step 2: Convert to fraction form
    83,381.24/115,083.98 = 53,159.60/x
  3. Step 3: Cross multiply
    83,381.24x = 115,083.98 × 53,159.60
  4. Step 4: Simplify right side
    83,381.24x = 6,117,817,501.99
  5. Step 5: Solve for x
    x = 6,117,817,501.99/83,381.24
  6. Step 6: Final answer
    x = 73,371.63

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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.