Home / 42,539.85-63,712.67-20,368.89

Finding the Fourth Proportional to 42,539.85, 63,712.67 and 20,368.89

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Solution

The fourth proportional to 42,539.85, 63,712.67 and 20,368.89 is: 30,506.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,539.85 : 63,712.67 = 20,368.89 : x
  2. Step 2: Convert to fraction form
    42,539.85/63,712.67 = 20,368.89/x
  3. Step 3: Cross multiply
    42,539.85x = 63,712.67 × 20,368.89
  4. Step 4: Simplify right side
    42,539.85x = 1,297,756,264.99
  5. Step 5: Solve for x
    x = 1,297,756,264.99/42,539.85
  6. Step 6: Final answer
    x = 30,506.84

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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.