Home / 80,890,128.20-121,335,192.30-29,761,567.40

Finding the Fourth Proportional to 80,890,128.20, 121,335,192.30 and 29,761,567.40

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Solution

The fourth proportional to 80,890,128.20, 121,335,192.30 and 29,761,567.40 is: 44,642,351.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,890,128.20 : 121,335,192.30 = 29,761,567.40 : x
  2. Step 2: Convert to fraction form
    80,890,128.20/121,335,192.30 = 29,761,567.40/x
  3. Step 3: Cross multiply
    80,890,128.20x = 121,335,192.30 × 29,761,567.40
  4. Step 4: Simplify right side
    80,890,128.20x = 3,611,125,503,628,411
  5. Step 5: Solve for x
    x = 3,611,125,503,628,411/80,890,128.20
  6. Step 6: Final answer
    x = 44,642,351.10

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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.