Home / 86,814.40-130,221.60-56,876.80

Finding the Fourth Proportional to 86,814.40, 130,221.60 and 56,876.80

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Solution

The fourth proportional to 86,814.40, 130,221.60 and 56,876.80 is: 85,315.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,814.40 : 130,221.60 = 56,876.80 : x
  2. Step 2: Convert to fraction form
    86,814.40/130,221.60 = 56,876.80/x
  3. Step 3: Cross multiply
    86,814.40x = 130,221.60 × 56,876.80
  4. Step 4: Simplify right side
    86,814.40x = 7,406,587,898.88
  5. Step 5: Solve for x
    x = 7,406,587,898.88/86,814.40
  6. Step 6: Final answer
    x = 85,315.20

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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.