Home / 57,128,226.84-78,890,759.28-39,772,030.80

Finding the Fourth Proportional to 57,128,226.84, 78,890,759.28 and 39,772,030.80

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Solution

The fourth proportional to 57,128,226.84, 78,890,759.28 and 39,772,030.80 is: 54,922,861.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,128,226.84 : 78,890,759.28 = 39,772,030.80 : x
  2. Step 2: Convert to fraction form
    57,128,226.84/78,890,759.28 = 39,772,030.80/x
  3. Step 3: Cross multiply
    57,128,226.84x = 78,890,759.28 × 39,772,030.80
  4. Step 4: Simplify right side
    57,128,226.84x = 3,137,645,707,919,545.50
  5. Step 5: Solve for x
    x = 3,137,645,707,919,545.50/57,128,226.84
  6. Step 6: Final answer
    x = 54,922,861.81

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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.