Home / 61,290.30-91,888.68-31,689.24

Finding the Fourth Proportional to 61,290.30, 91,888.68 and 31,689.24

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Solution

The fourth proportional to 61,290.30, 91,888.68 and 31,689.24 is: 47,509.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,290.30 : 91,888.68 = 31,689.24 : x
  2. Step 2: Convert to fraction form
    61,290.30/91,888.68 = 31,689.24/x
  3. Step 3: Cross multiply
    61,290.30x = 91,888.68 × 31,689.24
  4. Step 4: Simplify right side
    61,290.30x = 2,911,882,433.80
  5. Step 5: Solve for x
    x = 2,911,882,433.80/61,290.30
  6. Step 6: Final answer
    x = 47,509.68

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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.