Home / 81,193.48-121,788.76-31,284.40

Finding the Fourth Proportional to 81,193.48, 121,788.76 and 31,284.40

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Solution

The fourth proportional to 81,193.48, 121,788.76 and 31,284.40 is: 46,926.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,193.48 : 121,788.76 = 31,284.40 : x
  2. Step 2: Convert to fraction form
    81,193.48/121,788.76 = 31,284.40/x
  3. Step 3: Cross multiply
    81,193.48x = 121,788.76 × 31,284.40
  4. Step 4: Simplify right side
    81,193.48x = 3,810,088,283.34
  5. Step 5: Solve for x
    x = 3,810,088,283.34/81,193.48
  6. Step 6: Final answer
    x = 46,926.04

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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.