Home / 69,430.12-104,142.78-19,510.60

Finding the Fourth Proportional to 69,430.12, 104,142.78 and 19,510.60

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Solution

The fourth proportional to 69,430.12, 104,142.78 and 19,510.60 is: 29,265.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,430.12 : 104,142.78 = 19,510.60 : x
  2. Step 2: Convert to fraction form
    69,430.12/104,142.78 = 19,510.60/x
  3. Step 3: Cross multiply
    69,430.12x = 104,142.78 × 19,510.60
  4. Step 4: Simplify right side
    69,430.12x = 2,031,888,123.47
  5. Step 5: Solve for x
    x = 2,031,888,123.47/69,430.12
  6. Step 6: Final answer
    x = 29,265.23

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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.