Home / 70,919.93-97,870.19-39,090.05

Finding the Fourth Proportional to 70,919.93, 97,870.19 and 39,090.05

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Solution

The fourth proportional to 70,919.93, 97,870.19 and 39,090.05 is: 53,944.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,919.93 : 97,870.19 = 39,090.05 : x
  2. Step 2: Convert to fraction form
    70,919.93/97,870.19 = 39,090.05/x
  3. Step 3: Cross multiply
    70,919.93x = 97,870.19 × 39,090.05
  4. Step 4: Simplify right side
    70,919.93x = 3,825,750,425.16
  5. Step 5: Solve for x
    x = 3,825,750,425.16/70,919.93
  6. Step 6: Final answer
    x = 53,944.64

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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.