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Finding the Fourth Proportional to 52,990.86, 79,412.48 and 39,827.89

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Solution

The fourth proportional to 52,990.86, 79,412.48 and 39,827.89 is: 59,686.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,990.86 : 79,412.48 = 39,827.89 : x
  2. Step 2: Convert to fraction form
    52,990.86/79,412.48 = 39,827.89/x
  3. Step 3: Cross multiply
    52,990.86x = 79,412.48 × 39,827.89
  4. Step 4: Simplify right side
    52,990.86x = 3,162,831,518.07
  5. Step 5: Solve for x
    x = 3,162,831,518.07/52,990.86
  6. Step 6: Final answer
    x = 59,686.36

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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.