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Finding the Fourth Proportional to 70,779.36, 106,088.56 and 36,993.30

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Solution

The fourth proportional to 70,779.36, 106,088.56 and 36,993.30 is: 55,447.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,779.36 : 106,088.56 = 36,993.30 : x
  2. Step 2: Convert to fraction form
    70,779.36/106,088.56 = 36,993.30/x
  3. Step 3: Cross multiply
    70,779.36x = 106,088.56 × 36,993.30
  4. Step 4: Simplify right side
    70,779.36x = 3,924,565,926.65
  5. Step 5: Solve for x
    x = 3,924,565,926.65/70,779.36
  6. Step 6: Final answer
    x = 55,447.89

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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.