Home / 70,930.16-106,420.64-30,386.66

Finding the Fourth Proportional to 70,930.16, 106,420.64 and 30,386.66

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Solution

The fourth proportional to 70,930.16, 106,420.64 and 30,386.66 is: 45,590.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,930.16 : 106,420.64 = 30,386.66 : x
  2. Step 2: Convert to fraction form
    70,930.16/106,420.64 = 30,386.66/x
  3. Step 3: Cross multiply
    70,930.16x = 106,420.64 × 30,386.66
  4. Step 4: Simplify right side
    70,930.16x = 3,233,767,120.63
  5. Step 5: Solve for x
    x = 3,233,767,120.63/70,930.16
  6. Step 6: Final answer
    x = 45,590.86

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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.