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Finding the Fourth Proportional to 78,952,929.40, 118,628,459.70 and 50,212,833.40

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Solution

The fourth proportional to 78,952,929.40, 118,628,459.70 and 50,212,833.40 is: 75,445,852.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,952,929.40 : 118,628,459.70 = 50,212,833.40 : x
  2. Step 2: Convert to fraction form
    78,952,929.40/118,628,459.70 = 50,212,833.40/x
  3. Step 3: Cross multiply
    78,952,929.40x = 118,628,459.70 × 50,212,833.40
  4. Step 4: Simplify right side
    78,952,929.40x = 5,956,671,083,414,714
  5. Step 5: Solve for x
    x = 5,956,671,083,414,714/78,952,929.40
  6. Step 6: Final answer
    x = 75,445,852.72

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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.