Home / 80,926,005.10-121,389,007.65-79,582,312.30

Finding the Fourth Proportional to 80,926,005.10, 121,389,007.65 and 79,582,312.30

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Solution

The fourth proportional to 80,926,005.10, 121,389,007.65 and 79,582,312.30 is: 119,373,468.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,926,005.10 : 121,389,007.65 = 79,582,312.30 : x
  2. Step 2: Convert to fraction form
    80,926,005.10/121,389,007.65 = 79,582,312.30/x
  3. Step 3: Cross multiply
    80,926,005.10x = 121,389,007.65 × 79,582,312.30
  4. Step 4: Simplify right side
    80,926,005.10x = 9,660,417,916,589,390
  5. Step 5: Solve for x
    x = 9,660,417,916,589,390/80,926,005.10
  6. Step 6: Final answer
    x = 119,373,468.45

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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.