Home / 77,346.19-116,019.38-21,186.79

Finding the Fourth Proportional to 77,346.19, 116,019.38 and 21,186.79

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Solution

The fourth proportional to 77,346.19, 116,019.38 and 21,186.79 is: 31,780.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,346.19 : 116,019.38 = 21,186.79 : x
  2. Step 2: Convert to fraction form
    77,346.19/116,019.38 = 21,186.79/x
  3. Step 3: Cross multiply
    77,346.19x = 116,019.38 × 21,186.79
  4. Step 4: Simplify right side
    77,346.19x = 2,458,078,314.32
  5. Step 5: Solve for x
    x = 2,458,078,314.32/77,346.19
  6. Step 6: Final answer
    x = 31,780.21

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1.5x scale

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.