Home / 72,431,688.40-108,647,532.60-18,579,000.40

Finding the Fourth Proportional to 72,431,688.40, 108,647,532.60 and 18,579,000.40

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Solution

The fourth proportional to 72,431,688.40, 108,647,532.60 and 18,579,000.40 is: 27,868,500.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,431,688.40 : 108,647,532.60 = 18,579,000.40 : x
  2. Step 2: Convert to fraction form
    72,431,688.40/108,647,532.60 = 18,579,000.40/x
  3. Step 3: Cross multiply
    72,431,688.40x = 108,647,532.60 × 18,579,000.40
  4. Step 4: Simplify right side
    72,431,688.40x = 2,018,562,551,634,412.75
  5. Step 5: Solve for x
    x = 2,018,562,551,634,412.75/72,431,688.40
  6. Step 6: Final answer
    x = 27,868,500.60

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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.