Home / 80,457,792.65-120,686,688.98-19,873,518.65

Finding the Fourth Proportional to 80,457,792.65, 120,686,688.98 and 19,873,518.65

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Solution

The fourth proportional to 80,457,792.65, 120,686,688.98 and 19,873,518.65 is: 29,810,277.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,457,792.65 : 120,686,688.98 = 19,873,518.65 : x
  2. Step 2: Convert to fraction form
    80,457,792.65/120,686,688.98 = 19,873,518.65/x
  3. Step 3: Cross multiply
    80,457,792.65x = 120,686,688.98 × 19,873,518.65
  4. Step 4: Simplify right side
    80,457,792.65x = 2,398,469,164,250,779.50
  5. Step 5: Solve for x
    x = 2,398,469,164,250,779.50/80,457,792.65
  6. Step 6: Final answer
    x = 29,810,277.98

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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.