Home / 70,821.81-97,733.82-38,990.73

Finding the Fourth Proportional to 70,821.81, 97,733.82 and 38,990.73

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Solution

The fourth proportional to 70,821.81, 97,733.82 and 38,990.73 is: 53,807.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,821.81 : 97,733.82 = 38,990.73 : x
  2. Step 2: Convert to fraction form
    70,821.81/97,733.82 = 38,990.73/x
  3. Step 3: Cross multiply
    70,821.81x = 97,733.82 × 38,990.73
  4. Step 4: Simplify right side
    70,821.81x = 3,810,712,987.49
  5. Step 5: Solve for x
    x = 3,810,712,987.49/70,821.81
  6. Step 6: Final answer
    x = 53,807.05

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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.