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Finding the Fourth Proportional to 70,364.70, 105,552.59 and 20,445.66

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Solution

The fourth proportional to 70,364.70, 105,552.59 and 20,445.66 is: 30,670.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,364.70 : 105,552.59 = 20,445.66 : x
  2. Step 2: Convert to fraction form
    70,364.70/105,552.59 = 20,445.66/x
  3. Step 3: Cross multiply
    70,364.70x = 105,552.59 × 20,445.66
  4. Step 4: Simplify right side
    70,364.70x = 2,158,092,265.03
  5. Step 5: Solve for x
    x = 2,158,092,265.03/70,364.70
  6. Step 6: Final answer
    x = 30,670.10

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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.