Home / 42,380,790.89-63,564,985.96-20,217,929.72

Finding the Fourth Proportional to 42,380,790.89, 63,564,985.96 and 20,217,929.72

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Solution

The fourth proportional to 42,380,790.89, 63,564,985.96 and 20,217,929.72 is: 30,323,936.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,380,790.89 : 63,564,985.96 = 20,217,929.72 : x
  2. Step 2: Convert to fraction form
    42,380,790.89/63,564,985.96 = 20,217,929.72/x
  3. Step 3: Cross multiply
    42,380,790.89x = 63,564,985.96 × 20,217,929.72
  4. Step 4: Simplify right side
    42,380,790.89x = 1,285,152,418,895,059.50
  5. Step 5: Solve for x
    x = 1,285,152,418,895,059.50/42,380,790.89
  6. Step 6: Final answer
    x = 30,323,936.67

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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.