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Finding the Fourth Proportional to 89,091.90, 122,946.87 and 48,807.12

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Solution

The fourth proportional to 89,091.90, 122,946.87 and 48,807.12 is: 67,353.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,091.90 : 122,946.87 = 48,807.12 : x
  2. Step 2: Convert to fraction form
    89,091.90/122,946.87 = 48,807.12/x
  3. Step 3: Cross multiply
    89,091.90x = 122,946.87 × 48,807.12
  4. Step 4: Simplify right side
    89,091.90x = 6,000,682,637.71
  5. Step 5: Solve for x
    x = 6,000,682,637.71/89,091.90
  6. Step 6: Final answer
    x = 67,353.85

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1.5x scale

Why These Related Problems?

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