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Finding the Fourth Proportional to 89,847.60, 134,868.60 and 56,605.20

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Solution

The fourth proportional to 89,847.60, 134,868.60 and 56,605.20 is: 84,969.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,847.60 : 134,868.60 = 56,605.20 : x
  2. Step 2: Convert to fraction form
    89,847.60/134,868.60 = 56,605.20/x
  3. Step 3: Cross multiply
    89,847.60x = 134,868.60 × 56,605.20
  4. Step 4: Simplify right side
    89,847.60x = 7,634,264,076.72
  5. Step 5: Solve for x
    x = 7,634,264,076.72/89,847.60
  6. Step 6: Final answer
    x = 84,969.04

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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.