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Finding the Fourth Proportional to 70,060.79, 105,071.74 and 19,448.19

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Solution

The fourth proportional to 70,060.79, 105,071.74 and 19,448.19 is: 29,166.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,060.79 : 105,071.74 = 19,448.19 : x
  2. Step 2: Convert to fraction form
    70,060.79/105,071.74 = 19,448.19/x
  3. Step 3: Cross multiply
    70,060.79x = 105,071.74 × 19,448.19
  4. Step 4: Simplify right side
    70,060.79x = 2,043,455,114.53
  5. Step 5: Solve for x
    x = 2,043,455,114.53/70,060.79
  6. Step 6: Final answer
    x = 29,166.89

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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.