Home / 81,409.48-112,341.79-47,419.04

Finding the Fourth Proportional to 81,409.48, 112,341.79 and 47,419.04

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Solution

The fourth proportional to 81,409.48, 112,341.79 and 47,419.04 is: 65,436.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,409.48 : 112,341.79 = 47,419.04 : x
  2. Step 2: Convert to fraction form
    81,409.48/112,341.79 = 47,419.04/x
  3. Step 3: Cross multiply
    81,409.48x = 112,341.79 × 47,419.04
  4. Step 4: Simplify right side
    81,409.48x = 5,327,139,833.68
  5. Step 5: Solve for x
    x = 5,327,139,833.68/81,409.48
  6. Step 6: Final answer
    x = 65,436.36

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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.