Home / 66,430,239.40-99,645,359.10-54,313,384.60

Finding the Fourth Proportional to 66,430,239.40, 99,645,359.10 and 54,313,384.60

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Solution

The fourth proportional to 66,430,239.40, 99,645,359.10 and 54,313,384.60 is: 81,470,076.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,430,239.40 : 99,645,359.10 = 54,313,384.60 : x
  2. Step 2: Convert to fraction form
    66,430,239.40/99,645,359.10 = 54,313,384.60/x
  3. Step 3: Cross multiply
    66,430,239.40x = 99,645,359.10 × 54,313,384.60
  4. Step 4: Simplify right side
    66,430,239.40x = 5,412,076,712,403,410
  5. Step 5: Solve for x
    x = 5,412,076,712,403,410/66,430,239.40
  6. Step 6: Final answer
    x = 81,470,076.90

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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.