Home / 81,051.20-111,901.20-52,385.84

Finding the Fourth Proportional to 81,051.20, 111,901.20 and 52,385.84

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Solution

The fourth proportional to 81,051.20, 111,901.20 and 52,385.84 is: 72,325.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,051.20 : 111,901.20 = 52,385.84 : x
  2. Step 2: Convert to fraction form
    81,051.20/111,901.20 = 52,385.84/x
  3. Step 3: Cross multiply
    81,051.20x = 111,901.20 × 52,385.84
  4. Step 4: Simplify right side
    81,051.20x = 5,862,038,359.01
  5. Step 5: Solve for x
    x = 5,862,038,359.01/81,051.20
  6. Step 6: Final answer
    x = 72,325.13

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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.