Home / 212,051.46-318,069.90-54,281.28

Finding the Fourth Proportional to 212,051.46, 318,069.90 and 54,281.28

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Solution

The fourth proportional to 212,051.46, 318,069.90 and 54,281.28 is: 81,420.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,051.46 : 318,069.90 = 54,281.28 : x
  2. Step 2: Convert to fraction form
    212,051.46/318,069.90 = 54,281.28/x
  3. Step 3: Cross multiply
    212,051.46x = 318,069.90 × 54,281.28
  4. Step 4: Simplify right side
    212,051.46x = 17,265,241,301.47
  5. Step 5: Solve for x
    x = 17,265,241,301.47/212,051.46
  6. Step 6: Final answer
    x = 81,420.05

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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.