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Finding the Fourth Proportional to 72,349.40, 108,506.64 and 19,759.16

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Solution

The fourth proportional to 72,349.40, 108,506.64 and 19,759.16 is: 29,633.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,349.40 : 108,506.64 = 19,759.16 : x
  2. Step 2: Convert to fraction form
    72,349.40/108,506.64 = 19,759.16/x
  3. Step 3: Cross multiply
    72,349.40x = 108,506.64 × 19,759.16
  4. Step 4: Simplify right side
    72,349.40x = 2,144,000,060.82
  5. Step 5: Solve for x
    x = 2,144,000,060.82/72,349.40
  6. Step 6: Final answer
    x = 29,633.97

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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.