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Finding the Fourth Proportional to 70,250.94, 105,360.48 and 20,319.93

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Solution

The fourth proportional to 70,250.94, 105,360.48 and 20,319.93 is: 30,475.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,250.94 : 105,360.48 = 20,319.93 : x
  2. Step 2: Convert to fraction form
    70,250.94/105,360.48 = 20,319.93/x
  3. Step 3: Cross multiply
    70,250.94x = 105,360.48 × 20,319.93
  4. Step 4: Simplify right side
    70,250.94x = 2,140,917,578.37
  5. Step 5: Solve for x
    x = 2,140,917,578.37/70,250.94
  6. Step 6: Final answer
    x = 30,475.29

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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.