Home / 81,005.60-121,465.20-34,205.60

Finding the Fourth Proportional to 81,005.60, 121,465.20 and 34,205.60

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Solution

The fourth proportional to 81,005.60, 121,465.20 and 34,205.60 is: 51,290.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,005.60 : 121,465.20 = 34,205.60 : x
  2. Step 2: Convert to fraction form
    81,005.60/121,465.20 = 34,205.60/x
  3. Step 3: Cross multiply
    81,005.60x = 121,465.20 × 34,205.60
  4. Step 4: Simplify right side
    81,005.60x = 4,154,790,045.12
  5. Step 5: Solve for x
    x = 4,154,790,045.12/81,005.60
  6. Step 6: Final answer
    x = 51,290.16

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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.