Home / 70,958.32-97,918.56-39,121.76

Finding the Fourth Proportional to 70,958.32, 97,918.56 and 39,121.76

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Solution

The fourth proportional to 70,958.32, 97,918.56 and 39,121.76 is: 53,985.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,958.32 : 97,918.56 = 39,121.76 : x
  2. Step 2: Convert to fraction form
    70,958.32/97,918.56 = 39,121.76/x
  3. Step 3: Cross multiply
    70,958.32x = 97,918.56 × 39,121.76
  4. Step 4: Simplify right side
    70,958.32x = 3,830,746,403.87
  5. Step 5: Solve for x
    x = 3,830,746,403.87/70,958.32
  6. Step 6: Final answer
    x = 53,985.87

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1.5x scale

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.