Home / 81,724.48-112,782.69-45,913.77

Finding the Fourth Proportional to 81,724.48, 112,782.69 and 45,913.77

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Solution

The fourth proportional to 81,724.48, 112,782.69 and 45,913.77 is: 63,362.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,724.48 : 112,782.69 = 45,913.77 : x
  2. Step 2: Convert to fraction form
    81,724.48/112,782.69 = 45,913.77/x
  3. Step 3: Cross multiply
    81,724.48x = 112,782.69 × 45,913.77
  4. Step 4: Simplify right side
    81,724.48x = 5,178,278,259.07
  5. Step 5: Solve for x
    x = 5,178,278,259.07/81,724.48
  6. Step 6: Final answer
    x = 63,362.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.