Home / 81,087.36-121,412.24-52,937.68

Finding the Fourth Proportional to 81,087.36, 121,412.24 and 52,937.68

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Solution

The fourth proportional to 81,087.36, 121,412.24 and 52,937.68 is: 79,263.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,087.36 : 121,412.24 = 52,937.68 : x
  2. Step 2: Convert to fraction form
    81,087.36/121,412.24 = 52,937.68/x
  3. Step 3: Cross multiply
    81,087.36x = 121,412.24 × 52,937.68
  4. Step 4: Simplify right side
    81,087.36x = 6,427,282,309.20
  5. Step 5: Solve for x
    x = 6,427,282,309.20/81,087.36
  6. Step 6: Final answer
    x = 79,263.68

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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.