Home / 70,531,431.60-105,790,926.60-19,408,897.20

Finding the Fourth Proportional to 70,531,431.60, 105,790,926.60 and 19,408,897.20

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Solution

The fourth proportional to 70,531,431.60, 105,790,926.60 and 19,408,897.20 is: 29,111,633.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,531,431.60 : 105,790,926.60 = 19,408,897.20 : x
  2. Step 2: Convert to fraction form
    70,531,431.60/105,790,926.60 = 19,408,897.20/x
  3. Step 3: Cross multiply
    70,531,431.60x = 105,790,926.60 × 19,408,897.20
  4. Step 4: Simplify right side
    70,531,431.60x = 2,053,285,219,072,145.25
  5. Step 5: Solve for x
    x = 2,053,285,219,072,145.25/70,531,431.60
  6. Step 6: Final answer
    x = 29,111,633.96

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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.