Home / 78,725,940.78-118,080,938.10-21,224,024.58

Finding the Fourth Proportional to 78,725,940.78, 118,080,938.10 and 21,224,024.58

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Solution

The fourth proportional to 78,725,940.78, 118,080,938.10 and 21,224,024.58 is: 31,833,887.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,725,940.78 : 118,080,938.10 = 21,224,024.58 : x
  2. Step 2: Convert to fraction form
    78,725,940.78/118,080,938.10 = 21,224,024.58/x
  3. Step 3: Cross multiply
    78,725,940.78x = 118,080,938.10 × 21,224,024.58
  4. Step 4: Simplify right side
    78,725,940.78x = 2,506,152,732,663,858
  5. Step 5: Solve for x
    x = 2,506,152,732,663,858/78,725,940.78
  6. Step 6: Final answer
    x = 31,833,887.38

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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.