Home / 45,988.40-68,969.64-19,721.72

Finding the Fourth Proportional to 45,988.40, 68,969.64 and 19,721.72

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Solution

The fourth proportional to 45,988.40, 68,969.64 and 19,721.72 is: 29,577.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,988.40 : 68,969.64 = 19,721.72 : x
  2. Step 2: Convert to fraction form
    45,988.40/68,969.64 = 19,721.72/x
  3. Step 3: Cross multiply
    45,988.40x = 68,969.64 × 19,721.72
  4. Step 4: Simplify right side
    45,988.40x = 1,360,199,928.58
  5. Step 5: Solve for x
    x = 1,360,199,928.58/45,988.40
  6. Step 6: Final answer
    x = 29,577.02

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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.