Home / 74,680,080.80-112,020,121.20-65,722,128.80

Finding the Fourth Proportional to 74,680,080.80, 112,020,121.20 and 65,722,128.80

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Solution

The fourth proportional to 74,680,080.80, 112,020,121.20 and 65,722,128.80 is: 98,583,193.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,680,080.80 : 112,020,121.20 = 65,722,128.80 : x
  2. Step 2: Convert to fraction form
    74,680,080.80/112,020,121.20 = 65,722,128.80/x
  3. Step 3: Cross multiply
    74,680,080.80x = 112,020,121.20 × 65,722,128.80
  4. Step 4: Simplify right side
    74,680,080.80x = 7,362,200,833,698,010
  5. Step 5: Solve for x
    x = 7,362,200,833,698,010/74,680,080.80
  6. Step 6: Final answer
    x = 98,583,193.20

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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.