Home / 81,820.05-112,909.71-53,525.13

Finding the Fourth Proportional to 81,820.05, 112,909.71 and 53,525.13

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Solution

The fourth proportional to 81,820.05, 112,909.71 and 53,525.13 is: 73,863.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,820.05 : 112,909.71 = 53,525.13 : x
  2. Step 2: Convert to fraction form
    81,820.05/112,909.71 = 53,525.13/x
  3. Step 3: Cross multiply
    81,820.05x = 112,909.71 × 53,525.13
  4. Step 4: Simplify right side
    81,820.05x = 6,043,506,906.01
  5. Step 5: Solve for x
    x = 6,043,506,906.01/81,820.05
  6. Step 6: Final answer
    x = 73,863.40

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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.