Home / 31,208,865.81-43,076,889.95-18,158,645.31

Finding the Fourth Proportional to 31,208,865.81, 43,076,889.95 and 18,158,645.31

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Solution

The fourth proportional to 31,208,865.81, 43,076,889.95 and 18,158,645.31 is: 25,063,966.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,208,865.81 : 43,076,889.95 = 18,158,645.31 : x
  2. Step 2: Convert to fraction form
    31,208,865.81/43,076,889.95 = 18,158,645.31/x
  3. Step 3: Cross multiply
    31,208,865.81x = 43,076,889.95 × 18,158,645.31
  4. Step 4: Simplify right side
    31,208,865.81x = 782,217,965,659,953.62
  5. Step 5: Solve for x
    x = 782,217,965,659,953.62/31,208,865.81
  6. Step 6: Final answer
    x = 25,063,966.45

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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.