Home / 30,513,141.37-42,119,184.50-20,203,185.97

Finding the Fourth Proportional to 30,513,141.37, 42,119,184.50 and 20,203,185.97

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Solution

The fourth proportional to 30,513,141.37, 42,119,184.50 and 20,203,185.97 is: 27,887,712.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,513,141.37 : 42,119,184.50 = 20,203,185.97 : x
  2. Step 2: Convert to fraction form
    30,513,141.37/42,119,184.50 = 20,203,185.97/x
  3. Step 3: Cross multiply
    30,513,141.37x = 42,119,184.50 × 20,203,185.97
  4. Step 4: Simplify right side
    30,513,141.37x = 850,941,717,358,241.38
  5. Step 5: Solve for x
    x = 850,941,717,358,241.38/30,513,141.37
  6. Step 6: Final answer
    x = 27,887,712.61

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.