Home / 57,128,229.84-78,890,763.42-39,772,033.80

Finding the Fourth Proportional to 57,128,229.84, 78,890,763.42 and 39,772,033.80

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Solution

The fourth proportional to 57,128,229.84, 78,890,763.42 and 39,772,033.80 is: 54,922,865.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,128,229.84 : 78,890,763.42 = 39,772,033.80 : x
  2. Step 2: Convert to fraction form
    57,128,229.84/78,890,763.42 = 39,772,033.80/x
  3. Step 3: Cross multiply
    57,128,229.84x = 78,890,763.42 × 39,772,033.80
  4. Step 4: Simplify right side
    57,128,229.84x = 3,137,646,109,248,043.50
  5. Step 5: Solve for x
    x = 3,137,646,109,248,043.50/57,128,229.84
  6. Step 6: Final answer
    x = 54,922,865.95

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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.