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Finding the Fourth Proportional to 30,148.70, 45,250.95 and 15,368.63

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Solution

The fourth proportional to 30,148.70, 45,250.95 and 15,368.63 is: 23,067.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,148.70 : 45,250.95 = 15,368.63 : x
  2. Step 2: Convert to fraction form
    30,148.70/45,250.95 = 15,368.63/x
  3. Step 3: Cross multiply
    30,148.70x = 45,250.95 × 15,368.63
  4. Step 4: Simplify right side
    30,148.70x = 695,444,881.44
  5. Step 5: Solve for x
    x = 695,444,881.44/30,148.70
  6. Step 6: Final answer
    x = 23,067.16

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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.