Home / 86,639.92-119,582.04-54,851.20

Finding the Fourth Proportional to 86,639.92, 119,582.04 and 54,851.20

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Solution

The fourth proportional to 86,639.92, 119,582.04 and 54,851.20 is: 75,706.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,639.92 : 119,582.04 = 54,851.20 : x
  2. Step 2: Convert to fraction form
    86,639.92/119,582.04 = 54,851.20/x
  3. Step 3: Cross multiply
    86,639.92x = 119,582.04 × 54,851.20
  4. Step 4: Simplify right side
    86,639.92x = 6,559,218,392.45
  5. Step 5: Solve for x
    x = 6,559,218,392.45/86,639.92
  6. Step 6: Final answer
    x = 75,706.65

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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.