Home / 86,961,789.81-120,007,658.84-47,806,089.30

Finding the Fourth Proportional to 86,961,789.81, 120,007,658.84 and 47,806,089.30

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Solution

The fourth proportional to 86,961,789.81, 120,007,658.84 and 47,806,089.30 is: 65,972,617.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,961,789.81 : 120,007,658.84 = 47,806,089.30 : x
  2. Step 2: Convert to fraction form
    86,961,789.81/120,007,658.84 = 47,806,089.30/x
  3. Step 3: Cross multiply
    86,961,789.81x = 120,007,658.84 × 47,806,089.30
  4. Step 4: Simplify right side
    86,961,789.81x = 5,737,096,854,949,943
  5. Step 5: Solve for x
    x = 5,737,096,854,949,943/86,961,789.81
  6. Step 6: Final answer
    x = 65,972,617.03

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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.