Home / 71,534,579.32-98,720,100.96-40,178,145.46

Finding the Fourth Proportional to 71,534,579.32, 98,720,100.96 and 40,178,145.46

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Solution

The fourth proportional to 71,534,579.32, 98,720,100.96 and 40,178,145.46 is: 55,447,178.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,534,579.32 : 98,720,100.96 = 40,178,145.46 : x
  2. Step 2: Convert to fraction form
    71,534,579.32/98,720,100.96 = 40,178,145.46/x
  3. Step 3: Cross multiply
    71,534,579.32x = 98,720,100.96 × 40,178,145.46
  4. Step 4: Simplify right side
    71,534,579.32x = 3,966,390,576,196,765.50
  5. Step 5: Solve for x
    x = 3,966,390,576,196,765.50/71,534,579.32
  6. Step 6: Final answer
    x = 55,447,178.33

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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.