Home / 31,208,864.81-43,076,888.57-18,158,644.31

Finding the Fourth Proportional to 31,208,864.81, 43,076,888.57 and 18,158,644.31

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Solution

The fourth proportional to 31,208,864.81, 43,076,888.57 and 18,158,644.31 is: 25,063,965.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,208,864.81 : 43,076,888.57 = 18,158,644.31 : x
  2. Step 2: Convert to fraction form
    31,208,864.81/43,076,888.57 = 18,158,644.31/x
  3. Step 3: Cross multiply
    31,208,864.81x = 43,076,888.57 × 18,158,644.31
  4. Step 4: Simplify right side
    31,208,864.81x = 782,217,897,354,146.62
  5. Step 5: Solve for x
    x = 782,217,897,354,146.62/31,208,864.81
  6. Step 6: Final answer
    x = 25,063,965.07

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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.