Home / 86,454.19-129,715.85-31,054.51

Finding the Fourth Proportional to 86,454.19, 129,715.85 and 31,054.51

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Solution

The fourth proportional to 86,454.19, 129,715.85 and 31,054.51 is: 46,594.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,454.19 : 129,715.85 = 31,054.51 : x
  2. Step 2: Convert to fraction form
    86,454.19/129,715.85 = 31,054.51/x
  3. Step 3: Cross multiply
    86,454.19x = 129,715.85 × 31,054.51
  4. Step 4: Simplify right side
    86,454.19x = 4,028,262,160.98
  5. Step 5: Solve for x
    x = 4,028,262,160.98/86,454.19
  6. Step 6: Final answer
    x = 46,594.18

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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.