Home / 78,725,959.15-118,080,965.59-21,224,042.95

Finding the Fourth Proportional to 78,725,959.15, 118,080,965.59 and 21,224,042.95

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Solution

The fourth proportional to 78,725,959.15, 118,080,965.59 and 21,224,042.95 is: 31,833,914.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,725,959.15 : 118,080,965.59 = 21,224,042.95 : x
  2. Step 2: Convert to fraction form
    78,725,959.15/118,080,965.59 = 21,224,042.95/x
  3. Step 3: Cross multiply
    78,725,959.15x = 118,080,965.59 × 21,224,042.95
  4. Step 4: Simplify right side
    78,725,959.15x = 2,506,155,485,259,632
  5. Step 5: Solve for x
    x = 2,506,155,485,259,632/78,725,959.15
  6. Step 6: Final answer
    x = 31,833,914.92

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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.