Home / 78,457,675.67-108,268,875.54-43,172,181.03

Finding the Fourth Proportional to 78,457,675.67, 108,268,875.54 and 43,172,181.03

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Solution

The fourth proportional to 78,457,675.67, 108,268,875.54 and 43,172,181.03 is: 59,576,114.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,457,675.67 : 108,268,875.54 = 43,172,181.03 : x
  2. Step 2: Convert to fraction form
    78,457,675.67/108,268,875.54 = 43,172,181.03/x
  3. Step 3: Cross multiply
    78,457,675.67x = 108,268,875.54 × 43,172,181.03
  4. Step 4: Simplify right side
    78,457,675.67x = 4,674,203,494,727,419
  5. Step 5: Solve for x
    x = 4,674,203,494,727,419/78,457,675.67
  6. Step 6: Final answer
    x = 59,576,114.83

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.