Home / 83,623.50-115,400.16-47,814.21

Finding the Fourth Proportional to 83,623.50, 115,400.16 and 47,814.21

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Solution

The fourth proportional to 83,623.50, 115,400.16 and 47,814.21 is: 65,983.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,623.50 : 115,400.16 = 47,814.21 : x
  2. Step 2: Convert to fraction form
    83,623.50/115,400.16 = 47,814.21/x
  3. Step 3: Cross multiply
    83,623.50x = 115,400.16 × 47,814.21
  4. Step 4: Simplify right side
    83,623.50x = 5,517,767,484.27
  5. Step 5: Solve for x
    x = 5,517,767,484.27/83,623.50
  6. Step 6: Final answer
    x = 65,983.46

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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.