Home / 81,215.60-121,823.40-46,223.60

Finding the Fourth Proportional to 81,215.60, 121,823.40 and 46,223.60

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Solution

The fourth proportional to 81,215.60, 121,823.40 and 46,223.60 is: 69,335.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,215.60 : 121,823.40 = 46,223.60 : x
  2. Step 2: Convert to fraction form
    81,215.60/121,823.40 = 46,223.60/x
  3. Step 3: Cross multiply
    81,215.60x = 121,823.40 × 46,223.60
  4. Step 4: Simplify right side
    81,215.60x = 5,631,116,112.24
  5. Step 5: Solve for x
    x = 5,631,116,112.24/81,215.60
  6. Step 6: Final answer
    x = 69,335.40

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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.