Home / 81,612,136.40-122,134,769.40-56,102,968.40

Finding the Fourth Proportional to 81,612,136.40, 122,134,769.40 and 56,102,968.40

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Solution

The fourth proportional to 81,612,136.40, 122,134,769.40 and 56,102,968.40 is: 83,959,609.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,612,136.40 : 122,134,769.40 = 56,102,968.40 : x
  2. Step 2: Convert to fraction form
    81,612,136.40/122,134,769.40 = 56,102,968.40/x
  3. Step 3: Cross multiply
    81,612,136.40x = 122,134,769.40 × 56,102,968.40
  4. Step 4: Simplify right side
    81,612,136.40x = 6,852,123,108,189,487
  5. Step 5: Solve for x
    x = 6,852,123,108,189,487/81,612,136.40
  6. Step 6: Final answer
    x = 83,959,609.57

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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.