Home / 86,555.72-129,839.50-51,068.90

Finding the Fourth Proportional to 86,555.72, 129,839.50 and 51,068.90

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Solution

The fourth proportional to 86,555.72, 129,839.50 and 51,068.90 is: 76,606.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,555.72 : 129,839.50 = 51,068.90 : x
  2. Step 2: Convert to fraction form
    86,555.72/129,839.50 = 51,068.90/x
  3. Step 3: Cross multiply
    86,555.72x = 129,839.50 × 51,068.90
  4. Step 4: Simplify right side
    86,555.72x = 6,630,760,441.55
  5. Step 5: Solve for x
    x = 6,630,760,441.55/86,555.72
  6. Step 6: Final answer
    x = 76,606.84

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.