Home / 81,021,737.16-111,810,744.36-47,983,865.40

Finding the Fourth Proportional to 81,021,737.16, 111,810,744.36 and 47,983,865.40

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Solution

The fourth proportional to 81,021,737.16, 111,810,744.36 and 47,983,865.40 is: 66,218,176.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,021,737.16 : 111,810,744.36 = 47,983,865.40 : x
  2. Step 2: Convert to fraction form
    81,021,737.16/111,810,744.36 = 47,983,865.40/x
  3. Step 3: Cross multiply
    81,021,737.16x = 111,810,744.36 × 47,983,865.40
  4. Step 4: Simplify right side
    81,021,737.16x = 5,365,111,707,644,049
  5. Step 5: Solve for x
    x = 5,365,111,707,644,049/81,021,737.16
  6. Step 6: Final answer
    x = 66,218,176.70

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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.