Home / 86,019,982.80-129,027,209.40-28,514,907.60

Finding the Fourth Proportional to 86,019,982.80, 129,027,209.40 and 28,514,907.60

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Solution

The fourth proportional to 86,019,982.80, 129,027,209.40 and 28,514,907.60 is: 42,771,444.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,019,982.80 : 129,027,209.40 = 28,514,907.60 : x
  2. Step 2: Convert to fraction form
    86,019,982.80/129,027,209.40 = 28,514,907.60/x
  3. Step 3: Cross multiply
    86,019,982.80x = 129,027,209.40 × 28,514,907.60
  4. Step 4: Simplify right side
    86,019,982.80x = 3,679,198,953,926,852
  5. Step 5: Solve for x
    x = 3,679,198,953,926,852/86,019,982.80
  6. Step 6: Final answer
    x = 42,771,444.89

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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.