Home / 72,693,561.40-108,893,375.70-45,315,820.60

Finding the Fourth Proportional to 72,693,561.40, 108,893,375.70 and 45,315,820.60

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Solution

The fourth proportional to 72,693,561.40, 108,893,375.70 and 45,315,820.60 is: 67,882,114.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,693,561.40 : 108,893,375.70 = 45,315,820.60 : x
  2. Step 2: Convert to fraction form
    72,693,561.40/108,893,375.70 = 45,315,820.60/x
  3. Step 3: Cross multiply
    72,693,561.40x = 108,893,375.70 × 45,315,820.60
  4. Step 4: Simplify right side
    72,693,561.40x = 4,934,592,677,749,600
  5. Step 5: Solve for x
    x = 4,934,592,677,749,600/72,693,561.40
  6. Step 6: Final answer
    x = 67,882,114.77

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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.