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Finding the Fourth Proportional to 61,152.93, 91,739.12 and 29,990.61

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Solution

The fourth proportional to 61,152.93, 91,739.12 and 29,990.61 is: 44,990.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,152.93 : 91,739.12 = 29,990.61 : x
  2. Step 2: Convert to fraction form
    61,152.93/91,739.12 = 29,990.61/x
  3. Step 3: Cross multiply
    61,152.93x = 91,739.12 × 29,990.61
  4. Step 4: Simplify right side
    61,152.93x = 2,751,312,019.71
  5. Step 5: Solve for x
    x = 2,751,312,019.71/61,152.93
  6. Step 6: Final answer
    x = 44,990.68

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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.