Home / 84,981.69-127,278.54-40,639.73

Finding the Fourth Proportional to 84,981.69, 127,278.54 and 40,639.73

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Solution

The fourth proportional to 84,981.69, 127,278.54 and 40,639.73 is: 60,866.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,981.69 : 127,278.54 = 40,639.73 : x
  2. Step 2: Convert to fraction form
    84,981.69/127,278.54 = 40,639.73/x
  3. Step 3: Cross multiply
    84,981.69x = 127,278.54 × 40,639.73
  4. Step 4: Simplify right side
    84,981.69x = 5,172,564,864.00
  5. Step 5: Solve for x
    x = 5,172,564,864.00/84,981.69
  6. Step 6: Final answer
    x = 60,866.82

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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.