Home / 72,888.40-109,338.68-53,409.36

Finding the Fourth Proportional to 72,888.40, 109,338.68 and 53,409.36

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Solution

The fourth proportional to 72,888.40, 109,338.68 and 53,409.36 is: 80,118.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,888.40 : 109,338.68 = 53,409.36 : x
  2. Step 2: Convert to fraction form
    72,888.40/109,338.68 = 53,409.36/x
  3. Step 3: Cross multiply
    72,888.40x = 109,338.68 × 53,409.36
  4. Step 4: Simplify right side
    72,888.40x = 5,839,708,922.04
  5. Step 5: Solve for x
    x = 5,839,708,922.04/72,888.40
  6. Step 6: Final answer
    x = 80,118.50

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1.5x scale

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.