Home / 81,788,807.40-122,683,211.10-75,092,650.80

Finding the Fourth Proportional to 81,788,807.40, 122,683,211.10 and 75,092,650.80

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Solution

The fourth proportional to 81,788,807.40, 122,683,211.10 and 75,092,650.80 is: 112,638,976.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,788,807.40 : 122,683,211.10 = 75,092,650.80 : x
  2. Step 2: Convert to fraction form
    81,788,807.40/122,683,211.10 = 75,092,650.80/x
  3. Step 3: Cross multiply
    81,788,807.40x = 122,683,211.10 × 75,092,650.80
  4. Step 4: Simplify right side
    81,788,807.40x = 9,212,607,530,154,984
  5. Step 5: Solve for x
    x = 9,212,607,530,154,984/81,788,807.40
  6. Step 6: Final answer
    x = 112,638,976.20

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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.