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Finding the Fourth Proportional to 89,999.77, 135,024.69 and 39,389.77

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Solution

The fourth proportional to 89,999.77, 135,024.69 and 39,389.77 is: 59,095.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,999.77 : 135,024.69 = 39,389.77 : x
  2. Step 2: Convert to fraction form
    89,999.77/135,024.69 = 39,389.77/x
  3. Step 3: Cross multiply
    89,999.77x = 135,024.69 × 39,389.77
  4. Step 4: Simplify right side
    89,999.77x = 5,318,591,483.42
  5. Step 5: Solve for x
    x = 5,318,591,483.42/89,999.77
  6. Step 6: Final answer
    x = 59,095.61

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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.