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Finding the Fourth Proportional to 29,142,486.60, 43,718,978.70 and 12,104,881.80

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Solution

The fourth proportional to 29,142,486.60, 43,718,978.70 and 12,104,881.80 is: 18,159,502.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,142,486.60 : 43,718,978.70 = 12,104,881.80 : x
  2. Step 2: Convert to fraction form
    29,142,486.60/43,718,978.70 = 12,104,881.80/x
  3. Step 3: Cross multiply
    29,142,486.60x = 43,718,978.70 × 12,104,881.80
  4. Step 4: Simplify right side
    29,142,486.60x = 529,213,069,580,217.75
  5. Step 5: Solve for x
    x = 529,213,069,580,217.75/29,142,486.60
  6. Step 6: Final answer
    x = 18,159,502.89

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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.