Home / 78,776,429.80-118,070,166.30-40,418,199.40

Finding the Fourth Proportional to 78,776,429.80, 118,070,166.30 and 40,418,199.40

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Solution

The fourth proportional to 78,776,429.80, 118,070,166.30 and 40,418,199.40 is: 60,578,824.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,776,429.80 : 118,070,166.30 = 40,418,199.40 : x
  2. Step 2: Convert to fraction form
    78,776,429.80/118,070,166.30 = 40,418,199.40/x
  3. Step 3: Cross multiply
    78,776,429.80x = 118,070,166.30 × 40,418,199.40
  4. Step 4: Simplify right side
    78,776,429.80x = 4,772,183,524,704,560
  5. Step 5: Solve for x
    x = 4,772,183,524,704,560/78,776,429.80
  6. Step 6: Final answer
    x = 60,578,824.62

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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.