Home / 81,409.14-112,341.33-47,418.66

Finding the Fourth Proportional to 81,409.14, 112,341.33 and 47,418.66

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Solution

The fourth proportional to 81,409.14, 112,341.33 and 47,418.66 is: 65,435.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,409.14 : 112,341.33 = 47,418.66 : x
  2. Step 2: Convert to fraction form
    81,409.14/112,341.33 = 47,418.66/x
  3. Step 3: Cross multiply
    81,409.14x = 112,341.33 × 47,418.66
  4. Step 4: Simplify right side
    81,409.14x = 5,327,075,331.22
  5. Step 5: Solve for x
    x = 5,327,075,331.22/81,409.14
  6. Step 6: Final answer
    x = 65,435.84

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1.5x scale

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.