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Finding the Fourth Proportional to 141,779, 212,705.40 and 53,039.44

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Solution

The fourth proportional to 141,779, 212,705.40 and 53,039.44 is: 79,572.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    141,779 : 212,705.40 = 53,039.44 : x
  2. Step 2: Convert to fraction form
    141,779/212,705.40 = 53,039.44/x
  3. Step 3: Cross multiply
    141,779x = 212,705.40 × 53,039.44
  4. Step 4: Simplify right side
    141,779x = 11,281,775,300.98
  5. Step 5: Solve for x
    x = 11,281,775,300.98/141,779
  6. Step 6: Final answer
    x = 79,572.96

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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.