Home / 70,840.29-106,271.96-20,925.42

Finding the Fourth Proportional to 70,840.29, 106,271.96 and 20,925.42

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Solution

The fourth proportional to 70,840.29, 106,271.96 and 20,925.42 is: 31,391.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,840.29 : 106,271.96 = 20,925.42 : x
  2. Step 2: Convert to fraction form
    70,840.29/106,271.96 = 20,925.42/x
  3. Step 3: Cross multiply
    70,840.29x = 106,271.96 × 20,925.42
  4. Step 4: Simplify right side
    70,840.29x = 2,223,785,292.60
  5. Step 5: Solve for x
    x = 2,223,785,292.60/70,840.29
  6. Step 6: Final answer
    x = 31,391.53

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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.