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Finding the Fourth Proportional to 70,215.15, 105,300.84 and 23,457.09

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Solution

The fourth proportional to 70,215.15, 105,300.84 and 23,457.09 is: 35,178.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,215.15 : 105,300.84 = 23,457.09 : x
  2. Step 2: Convert to fraction form
    70,215.15/105,300.84 = 23,457.09/x
  3. Step 3: Cross multiply
    70,215.15x = 105,300.84 × 23,457.09
  4. Step 4: Simplify right side
    70,215.15x = 2,470,051,763.80
  5. Step 5: Solve for x
    x = 2,470,051,763.80/70,215.15
  6. Step 6: Final answer
    x = 35,178.33

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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.