Home / 81,821.55-112,911.78-53,526.63

Finding the Fourth Proportional to 81,821.55, 112,911.78 and 53,526.63

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Solution

The fourth proportional to 81,821.55, 112,911.78 and 53,526.63 is: 73,865.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,821.55 : 112,911.78 = 53,526.63 : x
  2. Step 2: Convert to fraction form
    81,821.55/112,911.78 = 53,526.63/x
  3. Step 3: Cross multiply
    81,821.55x = 112,911.78 × 53,526.63
  4. Step 4: Simplify right side
    81,821.55x = 6,043,787,070.70
  5. Step 5: Solve for x
    x = 6,043,787,070.70/81,821.55
  6. Step 6: Final answer
    x = 73,865.47

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1.5x scale

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.