Home / 39,142,864.80-58,723,628.40-18,931,485.60

Finding the Fourth Proportional to 39,142,864.80, 58,723,628.40 and 18,931,485.60

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Solution

The fourth proportional to 39,142,864.80, 58,723,628.40 and 18,931,485.60 is: 28,401,741.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,142,864.80 : 58,723,628.40 = 18,931,485.60 : x
  2. Step 2: Convert to fraction form
    39,142,864.80/58,723,628.40 = 18,931,485.60/x
  3. Step 3: Cross multiply
    39,142,864.80x = 58,723,628.40 × 18,931,485.60
  4. Step 4: Simplify right side
    39,142,864.80x = 1,111,725,525,434,351.12
  5. Step 5: Solve for x
    x = 1,111,725,525,434,351.12/39,142,864.80
  6. Step 6: Final answer
    x = 28,401,741.44

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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.