Home / 77,026.67-115,532.10-20,864.51

Finding the Fourth Proportional to 77,026.67, 115,532.10 and 20,864.51

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Solution

The fourth proportional to 77,026.67, 115,532.10 and 20,864.51 is: 31,294.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,026.67 : 115,532.10 = 20,864.51 : x
  2. Step 2: Convert to fraction form
    77,026.67/115,532.10 = 20,864.51/x
  3. Step 3: Cross multiply
    77,026.67x = 115,532.10 × 20,864.51
  4. Step 4: Simplify right side
    77,026.67x = 2,410,520,655.77
  5. Step 5: Solve for x
    x = 2,410,520,655.77/77,026.67
  6. Step 6: Final answer
    x = 31,294.62

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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.