Home / 83,688.68-115,462.08-47,853.20

Finding the Fourth Proportional to 83,688.68, 115,462.08 and 47,853.20

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Solution

The fourth proportional to 83,688.68, 115,462.08 and 47,853.20 is: 66,021.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,688.68 : 115,462.08 = 47,853.20 : x
  2. Step 2: Convert to fraction form
    83,688.68/115,462.08 = 47,853.20/x
  3. Step 3: Cross multiply
    83,688.68x = 115,462.08 × 47,853.20
  4. Step 4: Simplify right side
    83,688.68x = 5,525,230,006.66
  5. Step 5: Solve for x
    x = 5,525,230,006.66/83,688.68
  6. Step 6: Final answer
    x = 66,021.23

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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.