Home / 70,821.36-97,731.36-38,990.16

Finding the Fourth Proportional to 70,821.36, 97,731.36 and 38,990.16

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Solution

The fourth proportional to 70,821.36, 97,731.36 and 38,990.16 is: 53,805.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,821.36 : 97,731.36 = 38,990.16 : x
  2. Step 2: Convert to fraction form
    70,821.36/97,731.36 = 38,990.16/x
  3. Step 3: Cross multiply
    70,821.36x = 97,731.36 × 38,990.16
  4. Step 4: Simplify right side
    70,821.36x = 3,810,561,363.42
  5. Step 5: Solve for x
    x = 3,810,561,363.42/70,821.36
  6. Step 6: Final answer
    x = 53,805.26

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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.