Home / 30,457,231.80-45,685,847.70-21,387,305.40

Finding the Fourth Proportional to 30,457,231.80, 45,685,847.70 and 21,387,305.40

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Solution

The fourth proportional to 30,457,231.80, 45,685,847.70 and 21,387,305.40 is: 32,080,958.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,457,231.80 : 45,685,847.70 = 21,387,305.40 : x
  2. Step 2: Convert to fraction form
    30,457,231.80/45,685,847.70 = 21,387,305.40/x
  3. Step 3: Cross multiply
    30,457,231.80x = 45,685,847.70 × 21,387,305.40
  4. Step 4: Simplify right side
    30,457,231.80x = 977,097,177,217,787.62
  5. Step 5: Solve for x
    x = 977,097,177,217,787.62/30,457,231.80
  6. Step 6: Final answer
    x = 32,080,958.10

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1.5x scale

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.