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Finding the Fourth Proportional to 81,014.70, 121,522.05 and 60,894.30

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Solution

The fourth proportional to 81,014.70, 121,522.05 and 60,894.30 is: 91,341.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,014.70 : 121,522.05 = 60,894.30 : x
  2. Step 2: Convert to fraction form
    81,014.70/121,522.05 = 60,894.30/x
  3. Step 3: Cross multiply
    81,014.70x = 121,522.05 × 60,894.30
  4. Step 4: Simplify right side
    81,014.70x = 7,400,000,169.32
  5. Step 5: Solve for x
    x = 7,400,000,169.32/81,014.70
  6. Step 6: Final answer
    x = 91,341.45

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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.