Home / 80,640,280.40-120,960,420.60-26,787,592.40

Finding the Fourth Proportional to 80,640,280.40, 120,960,420.60 and 26,787,592.40

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Solution

The fourth proportional to 80,640,280.40, 120,960,420.60 and 26,787,592.40 is: 40,181,388.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,640,280.40 : 120,960,420.60 = 26,787,592.40 : x
  2. Step 2: Convert to fraction form
    80,640,280.40/120,960,420.60 = 26,787,592.40/x
  3. Step 3: Cross multiply
    80,640,280.40x = 120,960,420.60 × 26,787,592.40
  4. Step 4: Simplify right side
    80,640,280.40x = 3,240,238,443,565,363
  5. Step 5: Solve for x
    x = 3,240,238,443,565,363/80,640,280.40
  6. Step 6: Final answer
    x = 40,181,388.60

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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.