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Finding the Fourth Proportional to 82,779.78, 124,138.35 and 35,392.89

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Solution

The fourth proportional to 82,779.78, 124,138.35 and 35,392.89 is: 53,075.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,779.78 : 124,138.35 = 35,392.89 : x
  2. Step 2: Convert to fraction form
    82,779.78/124,138.35 = 35,392.89/x
  3. Step 3: Cross multiply
    82,779.78x = 124,138.35 × 35,392.89
  4. Step 4: Simplify right side
    82,779.78x = 4,393,614,966.33
  5. Step 5: Solve for x
    x = 4,393,614,966.33/82,779.78
  6. Step 6: Final answer
    x = 53,075.94

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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.