Home / 70,870.13-97,800.78-39,038.96

Finding the Fourth Proportional to 70,870.13, 97,800.78 and 39,038.96

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Solution

The fourth proportional to 70,870.13, 97,800.78 and 39,038.96 is: 53,873.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,870.13 : 97,800.78 = 39,038.96 : x
  2. Step 2: Convert to fraction form
    70,870.13/97,800.78 = 39,038.96/x
  3. Step 3: Cross multiply
    70,870.13x = 97,800.78 × 39,038.96
  4. Step 4: Simplify right side
    70,870.13x = 3,818,040,249.38
  5. Step 5: Solve for x
    x = 3,818,040,249.38/70,870.13
  6. Step 6: Final answer
    x = 53,873.76

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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.