Home / 83,855.14-115,720.05-46,129.12

Finding the Fourth Proportional to 83,855.14, 115,720.05 and 46,129.12

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Solution

The fourth proportional to 83,855.14, 115,720.05 and 46,129.12 is: 63,658.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,855.14 : 115,720.05 = 46,129.12 : x
  2. Step 2: Convert to fraction form
    83,855.14/115,720.05 = 46,129.12/x
  3. Step 3: Cross multiply
    83,855.14x = 115,720.05 × 46,129.12
  4. Step 4: Simplify right side
    83,855.14x = 5,338,064,072.86
  5. Step 5: Solve for x
    x = 5,338,064,072.86/83,855.14
  6. Step 6: Final answer
    x = 63,658.16

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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.