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Finding the Fourth Proportional to 70,396.96, 105,595.37 and 28,277.05

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Solution

The fourth proportional to 70,396.96, 105,595.37 and 28,277.05 is: 42,415.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,396.96 : 105,595.37 = 28,277.05 : x
  2. Step 2: Convert to fraction form
    70,396.96/105,595.37 = 28,277.05/x
  3. Step 3: Cross multiply
    70,396.96x = 105,595.37 × 28,277.05
  4. Step 4: Simplify right side
    70,396.96x = 2,985,925,535.44
  5. Step 5: Solve for x
    x = 2,985,925,535.44/70,396.96
  6. Step 6: Final answer
    x = 42,415.55

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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.