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Finding the Fourth Proportional to 30,402,616.60, 45,611,700.90 and 21,444,664.60

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Solution

The fourth proportional to 30,402,616.60, 45,611,700.90 and 21,444,664.60 is: 32,172,481.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,402,616.60 : 45,611,700.90 = 21,444,664.60 : x
  2. Step 2: Convert to fraction form
    30,402,616.60/45,611,700.90 = 21,444,664.60/x
  3. Step 3: Cross multiply
    30,402,616.60x = 45,611,700.90 × 21,444,664.60
  4. Step 4: Simplify right side
    30,402,616.60x = 978,127,627,636,018.12
  5. Step 5: Solve for x
    x = 978,127,627,636,018.12/30,402,616.60
  6. Step 6: Final answer
    x = 32,172,481.75

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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.