Home / 81,087.18-111,880.35-49,254.18

Finding the Fourth Proportional to 81,087.18, 111,880.35 and 49,254.18

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Solution

The fourth proportional to 81,087.18, 111,880.35 and 49,254.18 is: 67,958.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,087.18 : 111,880.35 = 49,254.18 : x
  2. Step 2: Convert to fraction form
    81,087.18/111,880.35 = 49,254.18/x
  3. Step 3: Cross multiply
    81,087.18x = 111,880.35 × 49,254.18
  4. Step 4: Simplify right side
    81,087.18x = 5,510,574,897.36
  5. Step 5: Solve for x
    x = 5,510,574,897.36/81,087.18
  6. Step 6: Final answer
    x = 67,958.65

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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.