Home / 72,579,626.40-108,869,439.60-40,662,775.20

Finding the Fourth Proportional to 72,579,626.40, 108,869,439.60 and 40,662,775.20

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Solution

The fourth proportional to 72,579,626.40, 108,869,439.60 and 40,662,775.20 is: 60,994,162.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,579,626.40 : 108,869,439.60 = 40,662,775.20 : x
  2. Step 2: Convert to fraction form
    72,579,626.40/108,869,439.60 = 40,662,775.20/x
  3. Step 3: Cross multiply
    72,579,626.40x = 108,869,439.60 × 40,662,775.20
  4. Step 4: Simplify right side
    72,579,626.40x = 4,426,933,548,604,778
  5. Step 5: Solve for x
    x = 4,426,933,548,604,778/72,579,626.40
  6. Step 6: Final answer
    x = 60,994,162.80

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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.