Home / 70,566.77-105,819.37-20,645.80

Finding the Fourth Proportional to 70,566.77, 105,819.37 and 20,645.80

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Solution

The fourth proportional to 70,566.77, 105,819.37 and 20,645.80 is: 30,959.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,566.77 : 105,819.37 = 20,645.80 : x
  2. Step 2: Convert to fraction form
    70,566.77/105,819.37 = 20,645.80/x
  3. Step 3: Cross multiply
    70,566.77x = 105,819.37 × 20,645.80
  4. Step 4: Simplify right side
    70,566.77x = 2,184,725,549.15
  5. Step 5: Solve for x
    x = 2,184,725,549.15/70,566.77
  6. Step 6: Final answer
    x = 30,959.69

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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.