Home / 83,605.16-115,392.73-53,385.23

Finding the Fourth Proportional to 83,605.16, 115,392.73 and 53,385.23

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Solution

The fourth proportional to 83,605.16, 115,392.73 and 53,385.23 is: 73,682.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,605.16 : 115,392.73 = 53,385.23 : x
  2. Step 2: Convert to fraction form
    83,605.16/115,392.73 = 53,385.23/x
  3. Step 3: Cross multiply
    83,605.16x = 115,392.73 × 53,385.23
  4. Step 4: Simplify right side
    83,605.16x = 6,160,266,887.26
  5. Step 5: Solve for x
    x = 6,160,266,887.26/83,605.16
  6. Step 6: Final answer
    x = 73,682.85

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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.