Home / 74,518.89-111,778.32-19,114.89

Finding the Fourth Proportional to 74,518.89, 111,778.32 and 19,114.89

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Solution

The fourth proportional to 74,518.89, 111,778.32 and 19,114.89 is: 28,672.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,518.89 : 111,778.32 = 19,114.89 : x
  2. Step 2: Convert to fraction form
    74,518.89/111,778.32 = 19,114.89/x
  3. Step 3: Cross multiply
    74,518.89x = 111,778.32 × 19,114.89
  4. Step 4: Simplify right side
    74,518.89x = 2,136,630,291.18
  5. Step 5: Solve for x
    x = 2,136,630,291.18/74,518.89
  6. Step 6: Final answer
    x = 28,672.33

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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.