Home / 51,457.13-77,163.80-31,730.39

Finding the Fourth Proportional to 51,457.13, 77,163.80 and 31,730.39

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Solution

The fourth proportional to 51,457.13, 77,163.80 and 31,730.39 is: 47,582.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,457.13 : 77,163.80 = 31,730.39 : x
  2. Step 2: Convert to fraction form
    51,457.13/77,163.80 = 31,730.39/x
  3. Step 3: Cross multiply
    51,457.13x = 77,163.80 × 31,730.39
  4. Step 4: Simplify right side
    51,457.13x = 2,448,436,923.41
  5. Step 5: Solve for x
    x = 2,448,436,923.41/51,457.13
  6. Step 6: Final answer
    x = 47,582.08

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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.