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Finding the Fourth Proportional to 62,207,978.40, 93,311,967.60 and 19,076,839.20

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Solution

The fourth proportional to 62,207,978.40, 93,311,967.60 and 19,076,839.20 is: 28,615,258.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,207,978.40 : 93,311,967.60 = 19,076,839.20 : x
  2. Step 2: Convert to fraction form
    62,207,978.40/93,311,967.60 = 19,076,839.20/x
  3. Step 3: Cross multiply
    62,207,978.40x = 93,311,967.60 × 19,076,839.20
  4. Step 4: Simplify right side
    62,207,978.40x = 1,780,097,401,340,809.75
  5. Step 5: Solve for x
    x = 1,780,097,401,340,809.75/62,207,978.40
  6. Step 6: Final answer
    x = 28,615,258.80

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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.