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Finding the Fourth Proportional to 70,027.44, 105,041.28 and 20,779.44

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Solution

The fourth proportional to 70,027.44, 105,041.28 and 20,779.44 is: 31,169.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,027.44 : 105,041.28 = 20,779.44 : x
  2. Step 2: Convert to fraction form
    70,027.44/105,041.28 = 20,779.44/x
  3. Step 3: Cross multiply
    70,027.44x = 105,041.28 × 20,779.44
  4. Step 4: Simplify right side
    70,027.44x = 2,182,698,975.28
  5. Step 5: Solve for x
    x = 2,182,698,975.28/70,027.44
  6. Step 6: Final answer
    x = 31,169.20

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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.