Home / 81,271,861.20-121,907,448-29,444,312.40

Finding the Fourth Proportional to 81,271,861.20, 121,907,448 and 29,444,312.40

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Solution

The fourth proportional to 81,271,861.20, 121,907,448 and 29,444,312.40 is: 44,166,344.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,271,861.20 : 121,907,448 = 29,444,312.40 : x
  2. Step 2: Convert to fraction form
    81,271,861.20/121,907,448 = 29,444,312.40/x
  3. Step 3: Cross multiply
    81,271,861.20x = 121,907,448 × 29,444,312.40
  4. Step 4: Simplify right side
    81,271,861.20x = 3,589,480,982,798,755
  5. Step 5: Solve for x
    x = 3,589,480,982,798,755/81,271,861.20
  6. Step 6: Final answer
    x = 44,166,344.04

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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.