Home / 78,405,563.52-117,613,944-20,897,533.44

Finding the Fourth Proportional to 78,405,563.52, 117,613,944 and 20,897,533.44

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Solution

The fourth proportional to 78,405,563.52, 117,613,944 and 20,897,533.44 is: 31,347,792.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,405,563.52 : 117,613,944 = 20,897,533.44 : x
  2. Step 2: Convert to fraction form
    78,405,563.52/117,613,944 = 20,897,533.44/x
  3. Step 3: Cross multiply
    78,405,563.52x = 117,613,944 × 20,897,533.44
  4. Step 4: Simplify right side
    78,405,563.52x = 2,457,841,327,750,287.50
  5. Step 5: Solve for x
    x = 2,457,841,327,750,287.50/78,405,563.52
  6. Step 6: Final answer
    x = 31,347,792.39

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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.