Home / 40,870.27-61,272.32-12,775.86

Finding the Fourth Proportional to 40,870.27, 61,272.32 and 12,775.86

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Solution

The fourth proportional to 40,870.27, 61,272.32 and 12,775.86 is: 19,153.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,870.27 : 61,272.32 = 12,775.86 : x
  2. Step 2: Convert to fraction form
    40,870.27/61,272.32 = 12,775.86/x
  3. Step 3: Cross multiply
    40,870.27x = 61,272.32 × 12,775.86
  4. Step 4: Simplify right side
    40,870.27x = 782,806,582.20
  5. Step 5: Solve for x
    x = 782,806,582.20/40,870.27
  6. Step 6: Final answer
    x = 19,153.45

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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.