Home / 69,712.12-104,509.40-30,239.50

Finding the Fourth Proportional to 69,712.12, 104,509.40 and 30,239.50

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Solution

The fourth proportional to 69,712.12, 104,509.40 and 30,239.50 is: 45,333.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,712.12 : 104,509.40 = 30,239.50 : x
  2. Step 2: Convert to fraction form
    69,712.12/104,509.40 = 30,239.50/x
  3. Step 3: Cross multiply
    69,712.12x = 104,509.40 × 30,239.50
  4. Step 4: Simplify right side
    69,712.12x = 3,160,312,001.30
  5. Step 5: Solve for x
    x = 3,160,312,001.30/69,712.12
  6. Step 6: Final answer
    x = 45,333.75

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1.5x scale

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.