Home / 53,110.03-79,678.41-43,638.21

Finding the Fourth Proportional to 53,110.03, 79,678.41 and 43,638.21

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Solution

The fourth proportional to 53,110.03, 79,678.41 and 43,638.21 is: 65,468.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,110.03 : 79,678.41 = 43,638.21 : x
  2. Step 2: Convert to fraction form
    53,110.03/79,678.41 = 43,638.21/x
  3. Step 3: Cross multiply
    53,110.03x = 79,678.41 × 43,638.21
  4. Step 4: Simplify right side
    53,110.03x = 3,477,023,188.05
  5. Step 5: Solve for x
    x = 3,477,023,188.05/53,110.03
  6. Step 6: Final answer
    x = 65,468.30

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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.