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Finding the Fourth Proportional to 70,493.67, 105,666.26 and 28,403.64

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Solution

The fourth proportional to 70,493.67, 105,666.26 and 28,403.64 is: 42,575.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,493.67 : 105,666.26 = 28,403.64 : x
  2. Step 2: Convert to fraction form
    70,493.67/105,666.26 = 28,403.64/x
  3. Step 3: Cross multiply
    70,493.67x = 105,666.26 × 28,403.64
  4. Step 4: Simplify right side
    70,493.67x = 3,001,306,267.17
  5. Step 5: Solve for x
    x = 3,001,306,267.17/70,493.67
  6. Step 6: Final answer
    x = 42,575.54

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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.