Home / 78,725,963.81-118,080,972.58-21,224,047.61

Finding the Fourth Proportional to 78,725,963.81, 118,080,972.58 and 21,224,047.61

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Solution

The fourth proportional to 78,725,963.81, 118,080,972.58 and 21,224,047.61 is: 31,833,921.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,725,963.81 : 118,080,972.58 = 21,224,047.61 : x
  2. Step 2: Convert to fraction form
    78,725,963.81/118,080,972.58 = 21,224,047.61/x
  3. Step 3: Cross multiply
    78,725,963.81x = 118,080,972.58 × 21,224,047.61
  4. Step 4: Simplify right side
    78,725,963.81x = 2,506,156,183,176,499.50
  5. Step 5: Solve for x
    x = 2,506,156,183,176,499.50/78,725,963.81
  6. Step 6: Final answer
    x = 31,833,921.90

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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.