Home / 83,646.37-115,334.67-56,806.21

Finding the Fourth Proportional to 83,646.37, 115,334.67 and 56,806.21

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Solution

The fourth proportional to 83,646.37, 115,334.67 and 56,806.21 is: 78,326.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,646.37 : 115,334.67 = 56,806.21 : x
  2. Step 2: Convert to fraction form
    83,646.37/115,334.67 = 56,806.21/x
  3. Step 3: Cross multiply
    83,646.37x = 115,334.67 × 56,806.21
  4. Step 4: Simplify right side
    83,646.37x = 6,551,725,484.30
  5. Step 5: Solve for x
    x = 6,551,725,484.30/83,646.37
  6. Step 6: Final answer
    x = 78,326.48

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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.