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Finding the Fourth Proportional to 30,048.72, 45,071.80 and 17,814.48

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Solution

The fourth proportional to 30,048.72, 45,071.80 and 17,814.48 is: 26,720.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,048.72 : 45,071.80 = 17,814.48 : x
  2. Step 2: Convert to fraction form
    30,048.72/45,071.80 = 17,814.48/x
  3. Step 3: Cross multiply
    30,048.72x = 45,071.80 × 17,814.48
  4. Step 4: Simplify right side
    30,048.72x = 802,930,679.66
  5. Step 5: Solve for x
    x = 802,930,679.66/30,048.72
  6. Step 6: Final answer
    x = 26,720.96

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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.