Home / 86,799.40-130,199.10-51,317.80

Finding the Fourth Proportional to 86,799.40, 130,199.10 and 51,317.80

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Solution

The fourth proportional to 86,799.40, 130,199.10 and 51,317.80 is: 76,976.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,799.40 : 130,199.10 = 51,317.80 : x
  2. Step 2: Convert to fraction form
    86,799.40/130,199.10 = 51,317.80/x
  3. Step 3: Cross multiply
    86,799.40x = 130,199.10 × 51,317.80
  4. Step 4: Simplify right side
    86,799.40x = 6,681,531,373.98
  5. Step 5: Solve for x
    x = 6,681,531,373.98/86,799.40
  6. Step 6: Final answer
    x = 76,976.70

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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.