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Finding the Fourth Proportional to 72,354,798.40, 108,532,197.60 and 43,656,984.40

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Solution

The fourth proportional to 72,354,798.40, 108,532,197.60 and 43,656,984.40 is: 65,485,476.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,354,798.40 : 108,532,197.60 = 43,656,984.40 : x
  2. Step 2: Convert to fraction form
    72,354,798.40/108,532,197.60 = 43,656,984.40/x
  3. Step 3: Cross multiply
    72,354,798.40x = 108,532,197.60 × 43,656,984.40
  4. Step 4: Simplify right side
    72,354,798.40x = 4,738,188,457,520,917
  5. Step 5: Solve for x
    x = 4,738,188,457,520,917/72,354,798.40
  6. Step 6: Final answer
    x = 65,485,476.60

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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.