Home / 85,936,446.27-128,903,393.70-21,240,247.77

Finding the Fourth Proportional to 85,936,446.27, 128,903,393.70 and 21,240,247.77

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Solution

The fourth proportional to 85,936,446.27, 128,903,393.70 and 21,240,247.77 is: 31,860,056.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,936,446.27 : 128,903,393.70 = 21,240,247.77 : x
  2. Step 2: Convert to fraction form
    85,936,446.27/128,903,393.70 = 21,240,247.77/x
  3. Step 3: Cross multiply
    85,936,446.27x = 128,903,393.70 × 21,240,247.77
  4. Step 4: Simplify right side
    85,936,446.27x = 2,737,940,020,581,857
  5. Step 5: Solve for x
    x = 2,737,940,020,581,857/85,936,446.27
  6. Step 6: Final answer
    x = 31,860,056.35

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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.