Home / 78,725,934.74-118,080,929.12-21,224,018.54

Finding the Fourth Proportional to 78,725,934.74, 118,080,929.12 and 21,224,018.54

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Solution

The fourth proportional to 78,725,934.74, 118,080,929.12 and 21,224,018.54 is: 31,833,878.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,725,934.74 : 118,080,929.12 = 21,224,018.54 : x
  2. Step 2: Convert to fraction form
    78,725,934.74/118,080,929.12 = 21,224,018.54/x
  3. Step 3: Cross multiply
    78,725,934.74x = 118,080,929.12 × 21,224,018.54
  4. Step 4: Simplify right side
    78,725,934.74x = 2,506,151,828,863,306
  5. Step 5: Solve for x
    x = 2,506,151,828,863,306/78,725,934.74
  6. Step 6: Final answer
    x = 31,833,878.34

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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.