Home / 45,690.40-68,511.30-19,365.40

Finding the Fourth Proportional to 45,690.40, 68,511.30 and 19,365.40

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Solution

The fourth proportional to 45,690.40, 68,511.30 and 19,365.40 is: 29,037.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,690.40 : 68,511.30 = 19,365.40 : x
  2. Step 2: Convert to fraction form
    45,690.40/68,511.30 = 19,365.40/x
  3. Step 3: Cross multiply
    45,690.40x = 68,511.30 × 19,365.40
  4. Step 4: Simplify right side
    45,690.40x = 1,326,748,729.02
  5. Step 5: Solve for x
    x = 1,326,748,729.02/45,690.40
  6. Step 6: Final answer
    x = 29,037.80

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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.