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Finding the Fourth Proportional to 88,861.40, 133,097.70 and 53,739.80

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Solution

The fourth proportional to 88,861.40, 133,097.70 and 53,739.80 is: 80,492.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,861.40 : 133,097.70 = 53,739.80 : x
  2. Step 2: Convert to fraction form
    88,861.40/133,097.70 = 53,739.80/x
  3. Step 3: Cross multiply
    88,861.40x = 133,097.70 × 53,739.80
  4. Step 4: Simplify right side
    88,861.40x = 7,152,643,778.46
  5. Step 5: Solve for x
    x = 7,152,643,778.46/88,861.40
  6. Step 6: Final answer
    x = 80,492.13

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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.