Home / 79,518.72-109,736.70-43,220.16

Finding the Fourth Proportional to 79,518.72, 109,736.70 and 43,220.16

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Solution

The fourth proportional to 79,518.72, 109,736.70 and 43,220.16 is: 59,644.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,518.72 : 109,736.70 = 43,220.16 : x
  2. Step 2: Convert to fraction form
    79,518.72/109,736.70 = 43,220.16/x
  3. Step 3: Cross multiply
    79,518.72x = 109,736.70 × 43,220.16
  4. Step 4: Simplify right side
    79,518.72x = 4,742,837,731.87
  5. Step 5: Solve for x
    x = 4,742,837,731.87/79,518.72
  6. Step 6: Final answer
    x = 59,644.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.