Home / 72,312,493.74-99,797,395.86-40,956,120.78

Finding the Fourth Proportional to 72,312,493.74, 99,797,395.86 and 40,956,120.78

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Solution

The fourth proportional to 72,312,493.74, 99,797,395.86 and 40,956,120.78 is: 56,522,932.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,312,493.74 : 99,797,395.86 = 40,956,120.78 : x
  2. Step 2: Convert to fraction form
    72,312,493.74/99,797,395.86 = 40,956,120.78/x
  3. Step 3: Cross multiply
    72,312,493.74x = 99,797,395.86 × 40,956,120.78
  4. Step 4: Simplify right side
    72,312,493.74x = 4,087,314,198,371,632
  5. Step 5: Solve for x
    x = 4,087,314,198,371,632/72,312,493.74
  6. Step 6: Final answer
    x = 56,522,932.44

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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.