Home / 86,687,671-129,858,241.38-52,125,148.66

Finding the Fourth Proportional to 86,687,671, 129,858,241.38 and 52,125,148.66

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Solution

The fourth proportional to 86,687,671, 129,858,241.38 and 52,125,148.66 is: 78,083,538.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,687,671 : 129,858,241.38 = 52,125,148.66 : x
  2. Step 2: Convert to fraction form
    86,687,671/129,858,241.38 = 52,125,148.66/x
  3. Step 3: Cross multiply
    86,687,671x = 129,858,241.38 × 52,125,148.66
  4. Step 4: Simplify right side
    86,687,671x = 6,768,880,136,658,663
  5. Step 5: Solve for x
    x = 6,768,880,136,658,663/86,687,671
  6. Step 6: Final answer
    x = 78,083,538.97

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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.