Home / 86,210.19-118,965.78-47,971.98

Finding the Fourth Proportional to 86,210.19, 118,965.78 and 47,971.98

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Solution

The fourth proportional to 86,210.19, 118,965.78 and 47,971.98 is: 66,198.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,210.19 : 118,965.78 = 47,971.98 : x
  2. Step 2: Convert to fraction form
    86,210.19/118,965.78 = 47,971.98/x
  3. Step 3: Cross multiply
    86,210.19x = 118,965.78 × 47,971.98
  4. Step 4: Simplify right side
    86,210.19x = 5,707,024,018.84
  5. Step 5: Solve for x
    x = 5,707,024,018.84/86,210.19
  6. Step 6: Final answer
    x = 66,198.95

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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.