Home / 74,776,780.80-112,081,190.40-31,638,643.20

Finding the Fourth Proportional to 74,776,780.80, 112,081,190.40 and 31,638,643.20

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Solution

The fourth proportional to 74,776,780.80, 112,081,190.40 and 31,638,643.20 is: 47,422,431.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,776,780.80 : 112,081,190.40 = 31,638,643.20 : x
  2. Step 2: Convert to fraction form
    74,776,780.80/112,081,190.40 = 31,638,643.20/x
  3. Step 3: Cross multiply
    74,776,780.80x = 112,081,190.40 × 31,638,643.20
  4. Step 4: Simplify right side
    74,776,780.80x = 3,546,096,792,496,865.50
  5. Step 5: Solve for x
    x = 3,546,096,792,496,865.50/74,776,780.80
  6. Step 6: Final answer
    x = 47,422,431.86

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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.