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Finding the Fourth Proportional to 81,314.90, 121,972.35 and 48,050.90

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Solution

The fourth proportional to 81,314.90, 121,972.35 and 48,050.90 is: 72,076.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,314.90 : 121,972.35 = 48,050.90 : x
  2. Step 2: Convert to fraction form
    81,314.90/121,972.35 = 48,050.90/x
  3. Step 3: Cross multiply
    81,314.90x = 121,972.35 × 48,050.90
  4. Step 4: Simplify right side
    81,314.90x = 5,860,881,192.62
  5. Step 5: Solve for x
    x = 5,860,881,192.62/81,314.90
  6. Step 6: Final answer
    x = 72,076.35

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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.