Home / 80,457,730.40-120,686,595.60-19,873,456.40

Finding the Fourth Proportional to 80,457,730.40, 120,686,595.60 and 19,873,456.40

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Solution

The fourth proportional to 80,457,730.40, 120,686,595.60 and 19,873,456.40 is: 29,810,184.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,457,730.40 : 120,686,595.60 = 19,873,456.40 : x
  2. Step 2: Convert to fraction form
    80,457,730.40/120,686,595.60 = 19,873,456.40/x
  3. Step 3: Cross multiply
    80,457,730.40x = 120,686,595.60 × 19,873,456.40
  4. Step 4: Simplify right side
    80,457,730.40x = 2,398,459,795,721,031.50
  5. Step 5: Solve for x
    x = 2,398,459,795,721,031.50/80,457,730.40
  6. Step 6: Final answer
    x = 29,810,184.60

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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.