Home / 87,421,639.43-120,641,237.80-47,729,168.93

Finding the Fourth Proportional to 87,421,639.43, 120,641,237.80 and 47,729,168.93

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Solution

The fourth proportional to 87,421,639.43, 120,641,237.80 and 47,729,168.93 is: 65,865,912.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,421,639.43 : 120,641,237.80 = 47,729,168.93 : x
  2. Step 2: Convert to fraction form
    87,421,639.43/120,641,237.80 = 47,729,168.93/x
  3. Step 3: Cross multiply
    87,421,639.43x = 120,641,237.80 × 47,729,168.93
  4. Step 4: Simplify right side
    87,421,639.43x = 5,758,106,019,062,781
  5. Step 5: Solve for x
    x = 5,758,106,019,062,781/87,421,639.43
  6. Step 6: Final answer
    x = 65,865,912.11

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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.