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Finding the Fourth Proportional to 79,807.86, 119,685.74 and 26,485.51

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Solution

The fourth proportional to 79,807.86, 119,685.74 and 26,485.51 is: 39,719.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,807.86 : 119,685.74 = 26,485.51 : x
  2. Step 2: Convert to fraction form
    79,807.86/119,685.74 = 26,485.51/x
  3. Step 3: Cross multiply
    79,807.86x = 119,685.74 × 26,485.51
  4. Step 4: Simplify right side
    79,807.86x = 3,169,937,731.20
  5. Step 5: Solve for x
    x = 3,169,937,731.20/79,807.86
  6. Step 6: Final answer
    x = 39,719.62

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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.