Home / 40,830.30-61,255.86-19,780.42

Finding the Fourth Proportional to 40,830.30, 61,255.86 and 19,780.42

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Solution

The fourth proportional to 40,830.30, 61,255.86 and 19,780.42 is: 29,675.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,830.30 : 61,255.86 = 19,780.42 : x
  2. Step 2: Convert to fraction form
    40,830.30/61,255.86 = 19,780.42/x
  3. Step 3: Cross multiply
    40,830.30x = 61,255.86 × 19,780.42
  4. Step 4: Simplify right side
    40,830.30x = 1,211,666,638.26
  5. Step 5: Solve for x
    x = 1,211,666,638.26/40,830.30
  6. Step 6: Final answer
    x = 29,675.67

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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.