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Finding the Fourth Proportional to 30,042.72, 45,070.43 and 11,322.36

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Solution

The fourth proportional to 30,042.72, 45,070.43 and 11,322.36 is: 16,985.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,042.72 : 45,070.43 = 11,322.36 : x
  2. Step 2: Convert to fraction form
    30,042.72/45,070.43 = 11,322.36/x
  3. Step 3: Cross multiply
    30,042.72x = 45,070.43 × 11,322.36
  4. Step 4: Simplify right side
    30,042.72x = 510,303,577.20
  5. Step 5: Solve for x
    x = 510,303,577.20/30,042.72
  6. Step 6: Final answer
    x = 16,985.93

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.