Home / 90,992.30-136,395.47-31,779.27

Finding the Fourth Proportional to 90,992.30, 136,395.47 and 31,779.27

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Solution

The fourth proportional to 90,992.30, 136,395.47 and 31,779.27 is: 47,636.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,992.30 : 136,395.47 = 31,779.27 : x
  2. Step 2: Convert to fraction form
    90,992.30/136,395.47 = 31,779.27/x
  3. Step 3: Cross multiply
    90,992.30x = 136,395.47 × 31,779.27
  4. Step 4: Simplify right side
    90,992.30x = 4,334,548,547.36
  5. Step 5: Solve for x
    x = 4,334,548,547.36/90,992.30
  6. Step 6: Final answer
    x = 47,636.44

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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.