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Finding the Fourth Proportional to 75,210.30, 112,815.60 and 19,050.42

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Solution

The fourth proportional to 75,210.30, 112,815.60 and 19,050.42 is: 28,575.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,210.30 : 112,815.60 = 19,050.42 : x
  2. Step 2: Convert to fraction form
    75,210.30/112,815.60 = 19,050.42/x
  3. Step 3: Cross multiply
    75,210.30x = 112,815.60 × 19,050.42
  4. Step 4: Simplify right side
    75,210.30x = 2,149,184,562.55
  5. Step 5: Solve for x
    x = 2,149,184,562.55/75,210.30
  6. Step 6: Final answer
    x = 28,575.67

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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.