Home / 86,019,981.80-129,027,207.90-28,514,906.60

Finding the Fourth Proportional to 86,019,981.80, 129,027,207.90 and 28,514,906.60

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Solution

The fourth proportional to 86,019,981.80, 129,027,207.90 and 28,514,906.60 is: 42,771,443.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,019,981.80 : 129,027,207.90 = 28,514,906.60 : x
  2. Step 2: Convert to fraction form
    86,019,981.80/129,027,207.90 = 28,514,906.60/x
  3. Step 3: Cross multiply
    86,019,981.80x = 129,027,207.90 × 28,514,906.60
  4. Step 4: Simplify right side
    86,019,981.80x = 3,679,198,782,127,282.50
  5. Step 5: Solve for x
    x = 3,679,198,782,127,282.50/86,019,981.80
  6. Step 6: Final answer
    x = 42,771,443.39

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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.