Home / 39,142,828.80-58,723,574.40-18,931,449.60

Finding the Fourth Proportional to 39,142,828.80, 58,723,574.40 and 18,931,449.60

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Solution

The fourth proportional to 39,142,828.80, 58,723,574.40 and 18,931,449.60 is: 28,401,687.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,142,828.80 : 58,723,574.40 = 18,931,449.60 : x
  2. Step 2: Convert to fraction form
    39,142,828.80/58,723,574.40 = 18,931,449.60/x
  3. Step 3: Cross multiply
    39,142,828.80x = 58,723,574.40 × 18,931,449.60
  4. Step 4: Simplify right side
    39,142,828.80x = 1,111,722,389,085,450.25
  5. Step 5: Solve for x
    x = 1,111,722,389,085,450.25/39,142,828.80
  6. Step 6: Final answer
    x = 28,401,687.44

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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.