Home / 78,725,969.06-118,080,980.44-21,224,052.86

Finding the Fourth Proportional to 78,725,969.06, 118,080,980.44 and 21,224,052.86

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Solution

The fourth proportional to 78,725,969.06, 118,080,980.44 and 21,224,052.86 is: 31,833,929.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,725,969.06 : 118,080,980.44 = 21,224,052.86 : x
  2. Step 2: Convert to fraction form
    78,725,969.06/118,080,980.44 = 21,224,052.86/x
  3. Step 3: Cross multiply
    78,725,969.06x = 118,080,980.44 × 21,224,052.86
  4. Step 4: Simplify right side
    78,725,969.06x = 2,506,156,970,619,186
  5. Step 5: Solve for x
    x = 2,506,156,970,619,186/78,725,969.06
  6. Step 6: Final answer
    x = 31,833,929.78

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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.