Home / 80,456,742.40-120,685,113.60-19,872,468.40

Finding the Fourth Proportional to 80,456,742.40, 120,685,113.60 and 19,872,468.40

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Solution

The fourth proportional to 80,456,742.40, 120,685,113.60 and 19,872,468.40 is: 29,808,702.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,456,742.40 : 120,685,113.60 = 19,872,468.40 : x
  2. Step 2: Convert to fraction form
    80,456,742.40/120,685,113.60 = 19,872,468.40/x
  3. Step 3: Cross multiply
    80,456,742.40x = 120,685,113.60 × 19,872,468.40
  4. Step 4: Simplify right side
    80,456,742.40x = 2,398,311,106,366,410
  5. Step 5: Solve for x
    x = 2,398,311,106,366,410/80,456,742.40
  6. Step 6: Final answer
    x = 29,808,702.60

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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.