Home / 86,219.69-118,949.40-63,612.95

Finding the Fourth Proportional to 86,219.69, 118,949.40 and 63,612.95

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Solution

The fourth proportional to 86,219.69, 118,949.40 and 63,612.95 is: 87,760.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,219.69 : 118,949.40 = 63,612.95 : x
  2. Step 2: Convert to fraction form
    86,219.69/118,949.40 = 63,612.95/x
  3. Step 3: Cross multiply
    86,219.69x = 118,949.40 × 63,612.95
  4. Step 4: Simplify right side
    86,219.69x = 7,566,721,639.98
  5. Step 5: Solve for x
    x = 7,566,721,639.98/86,219.69
  6. Step 6: Final answer
    x = 87,760.95

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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.