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Finding the Fourth Proportional to 80,780.90, 111,457.41 and 48,520.94

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Solution

The fourth proportional to 80,780.90, 111,457.41 and 48,520.94 is: 66,946.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,780.90 : 111,457.41 = 48,520.94 : x
  2. Step 2: Convert to fraction form
    80,780.90/111,457.41 = 48,520.94/x
  3. Step 3: Cross multiply
    80,780.90x = 111,457.41 × 48,520.94
  4. Step 4: Simplify right side
    80,780.90x = 5,408,018,303.17
  5. Step 5: Solve for x
    x = 5,408,018,303.17/80,780.90
  6. Step 6: Final answer
    x = 66,946.74

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.