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Finding the Fourth Proportional to 70,041.73, 105,031.62 and 20,110.24

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Solution

The fourth proportional to 70,041.73, 105,031.62 and 20,110.24 is: 30,156.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,041.73 : 105,031.62 = 20,110.24 : x
  2. Step 2: Convert to fraction form
    70,041.73/105,031.62 = 20,110.24/x
  3. Step 3: Cross multiply
    70,041.73x = 105,031.62 × 20,110.24
  4. Step 4: Simplify right side
    70,041.73x = 2,112,211,085.79
  5. Step 5: Solve for x
    x = 2,112,211,085.79/70,041.73
  6. Step 6: Final answer
    x = 30,156.47

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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.