Home / 83,389.70-115,095.16-76,664.68

Finding the Fourth Proportional to 83,389.70, 115,095.16 and 76,664.68

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Solution

The fourth proportional to 83,389.70, 115,095.16 and 76,664.68 is: 105,813.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,389.70 : 115,095.16 = 76,664.68 : x
  2. Step 2: Convert to fraction form
    83,389.70/115,095.16 = 76,664.68/x
  3. Step 3: Cross multiply
    83,389.70x = 115,095.16 × 76,664.68
  4. Step 4: Simplify right side
    83,389.70x = 8,823,733,035.47
  5. Step 5: Solve for x
    x = 8,823,733,035.47/83,389.70
  6. Step 6: Final answer
    x = 105,813.22

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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.