Home / 86,211.72-118,988.55-53,961.30

Finding the Fourth Proportional to 86,211.72, 118,988.55 and 53,961.30

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Solution

The fourth proportional to 86,211.72, 118,988.55 and 53,961.30 is: 74,476.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,211.72 : 118,988.55 = 53,961.30 : x
  2. Step 2: Convert to fraction form
    86,211.72/118,988.55 = 53,961.30/x
  3. Step 3: Cross multiply
    86,211.72x = 118,988.55 × 53,961.30
  4. Step 4: Simplify right side
    86,211.72x = 6,420,776,843.12
  5. Step 5: Solve for x
    x = 6,420,776,843.12/86,211.72
  6. Step 6: Final answer
    x = 74,476.84

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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.