Home / 87,471,912.70-120,710,423.49-47,779,428.24

Finding the Fourth Proportional to 87,471,912.70, 120,710,423.49 and 47,779,428.24

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Solution

The fourth proportional to 87,471,912.70, 120,710,423.49 and 47,779,428.24 is: 65,935,165.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,471,912.70 : 120,710,423.49 = 47,779,428.24 : x
  2. Step 2: Convert to fraction form
    87,471,912.70/120,710,423.49 = 47,779,428.24/x
  3. Step 3: Cross multiply
    87,471,912.70x = 120,710,423.49 × 47,779,428.24
  4. Step 4: Simplify right side
    87,471,912.70x = 5,767,475,016,721,568
  5. Step 5: Solve for x
    x = 5,767,475,016,721,568/87,471,912.70
  6. Step 6: Final answer
    x = 65,935,165.23

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.