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Finding the Fourth Proportional to 79,242.78, 118,666.99 and 55,438.89

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Solution

The fourth proportional to 79,242.78, 118,666.99 and 55,438.89 is: 83,020.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,242.78 : 118,666.99 = 55,438.89 : x
  2. Step 2: Convert to fraction form
    79,242.78/118,666.99 = 55,438.89/x
  3. Step 3: Cross multiply
    79,242.78x = 118,666.99 × 55,438.89
  4. Step 4: Simplify right side
    79,242.78x = 6,578,766,205.24
  5. Step 5: Solve for x
    x = 6,578,766,205.24/79,242.78
  6. Step 6: Final answer
    x = 83,020.39

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1.5x scale

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.