Home / 70,072.21-105,045.81-25,688.60

Finding the Fourth Proportional to 70,072.21, 105,045.81 and 25,688.60

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Solution

The fourth proportional to 70,072.21, 105,045.81 and 25,688.60 is: 38,509.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,072.21 : 105,045.81 = 25,688.60 : x
  2. Step 2: Convert to fraction form
    70,072.21/105,045.81 = 25,688.60/x
  3. Step 3: Cross multiply
    70,072.21x = 105,045.81 × 25,688.60
  4. Step 4: Simplify right side
    70,072.21x = 2,698,479,794.77
  5. Step 5: Solve for x
    x = 2,698,479,794.77/70,072.21
  6. Step 6: Final answer
    x = 38,509.99

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.