Home / 80,457,835.40-120,686,753.10-19,873,561.40

Finding the Fourth Proportional to 80,457,835.40, 120,686,753.10 and 19,873,561.40

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Solution

The fourth proportional to 80,457,835.40, 120,686,753.10 and 19,873,561.40 is: 29,810,342.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,457,835.40 : 120,686,753.10 = 19,873,561.40 : x
  2. Step 2: Convert to fraction form
    80,457,835.40/120,686,753.10 = 19,873,561.40/x
  3. Step 3: Cross multiply
    80,457,835.40x = 120,686,753.10 × 19,873,561.40
  4. Step 4: Simplify right side
    80,457,835.40x = 2,398,475,597,899,490
  5. Step 5: Solve for x
    x = 2,398,475,597,899,490/80,457,835.40
  6. Step 6: Final answer
    x = 29,810,342.10

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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.