Home / 78,725,939.48-118,080,936.23-21,224,023.28

Finding the Fourth Proportional to 78,725,939.48, 118,080,936.23 and 21,224,023.28

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Solution

The fourth proportional to 78,725,939.48, 118,080,936.23 and 21,224,023.28 is: 31,833,885.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,725,939.48 : 118,080,936.23 = 21,224,023.28 : x
  2. Step 2: Convert to fraction form
    78,725,939.48/118,080,936.23 = 21,224,023.28/x
  3. Step 3: Cross multiply
    78,725,939.48x = 118,080,936.23 × 21,224,023.28
  4. Step 4: Simplify right side
    78,725,939.48x = 2,506,152,538,773,190.50
  5. Step 5: Solve for x
    x = 2,506,152,538,773,190.50/78,725,939.48
  6. Step 6: Final answer
    x = 31,833,885.44

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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.