Home / 70,811.12-97,719.37-38,980.02

Finding the Fourth Proportional to 70,811.12, 97,719.37 and 38,980.02

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Solution

The fourth proportional to 70,811.12, 97,719.37 and 38,980.02 is: 53,792.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,811.12 : 97,719.37 = 38,980.02 : x
  2. Step 2: Convert to fraction form
    70,811.12/97,719.37 = 38,980.02/x
  3. Step 3: Cross multiply
    70,811.12x = 97,719.37 × 38,980.02
  4. Step 4: Simplify right side
    70,811.12x = 3,809,102,996.99
  5. Step 5: Solve for x
    x = 3,809,102,996.99/70,811.12
  6. Step 6: Final answer
    x = 53,792.44

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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.