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Finding the Fourth Proportional to 86,137.67, 118,836.78 and 63,530.23

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Solution

The fourth proportional to 86,137.67, 118,836.78 and 63,530.23 is: 87,647.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,137.67 : 118,836.78 = 63,530.23 : x
  2. Step 2: Convert to fraction form
    86,137.67/118,836.78 = 63,530.23/x
  3. Step 3: Cross multiply
    86,137.67x = 118,836.78 × 63,530.23
  4. Step 4: Simplify right side
    86,137.67x = 7,549,727,965.86
  5. Step 5: Solve for x
    x = 7,549,727,965.86/86,137.67
  6. Step 6: Final answer
    x = 87,647.23

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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.