Home / 30,386.20-45,579.30-29,219.80

Finding the Fourth Proportional to 30,386.20, 45,579.30 and 29,219.80

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Solution

The fourth proportional to 30,386.20, 45,579.30 and 29,219.80 is: 43,829.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,386.20 : 45,579.30 = 29,219.80 : x
  2. Step 2: Convert to fraction form
    30,386.20/45,579.30 = 29,219.80/x
  3. Step 3: Cross multiply
    30,386.20x = 45,579.30 × 29,219.80
  4. Step 4: Simplify right side
    30,386.20x = 1,331,818,030.14
  5. Step 5: Solve for x
    x = 1,331,818,030.14/30,386.20
  6. Step 6: Final answer
    x = 43,829.70

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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.