Home / 79,437.19-109,622.90-43,138.32

Finding the Fourth Proportional to 79,437.19, 109,622.90 and 43,138.32

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Solution

The fourth proportional to 79,437.19, 109,622.90 and 43,138.32 is: 59,530.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,437.19 : 109,622.90 = 43,138.32 : x
  2. Step 2: Convert to fraction form
    79,437.19/109,622.90 = 43,138.32/x
  3. Step 3: Cross multiply
    79,437.19x = 109,622.90 × 43,138.32
  4. Step 4: Simplify right side
    79,437.19x = 4,728,947,523.84
  5. Step 5: Solve for x
    x = 4,728,947,523.84/79,437.19
  6. Step 6: Final answer
    x = 59,530.65

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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.