Home / 78,776,431.30-118,070,168.55-40,418,200.90

Finding the Fourth Proportional to 78,776,431.30, 118,070,168.55 and 40,418,200.90

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Solution

The fourth proportional to 78,776,431.30, 118,070,168.55 and 40,418,200.90 is: 60,578,826.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,776,431.30 : 118,070,168.55 = 40,418,200.90 : x
  2. Step 2: Convert to fraction form
    78,776,431.30/118,070,168.55 = 40,418,200.90/x
  3. Step 3: Cross multiply
    78,776,431.30x = 118,070,168.55 × 40,418,200.90
  4. Step 4: Simplify right side
    78,776,431.30x = 4,772,183,792,750,761
  5. Step 5: Solve for x
    x = 4,772,183,792,750,761/78,776,431.30
  6. Step 6: Final answer
    x = 60,578,826.86

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.