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Finding the Fourth Proportional to 30,411.78, 45,619.68 and 14,620.14

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Solution

The fourth proportional to 30,411.78, 45,619.68 and 14,620.14 is: 21,931.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,411.78 : 45,619.68 = 14,620.14 : x
  2. Step 2: Convert to fraction form
    30,411.78/45,619.68 = 14,620.14/x
  3. Step 3: Cross multiply
    30,411.78x = 45,619.68 × 14,620.14
  4. Step 4: Simplify right side
    30,411.78x = 666,966,108.36
  5. Step 5: Solve for x
    x = 666,966,108.36/30,411.78
  6. Step 6: Final answer
    x = 21,931.18

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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.