Home / 81,657,008.60-122,485,512.90-40,842,339.80

Finding the Fourth Proportional to 81,657,008.60, 122,485,512.90 and 40,842,339.80

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Solution

The fourth proportional to 81,657,008.60, 122,485,512.90 and 40,842,339.80 is: 61,263,509.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,657,008.60 : 122,485,512.90 = 40,842,339.80 : x
  2. Step 2: Convert to fraction form
    81,657,008.60/122,485,512.90 = 40,842,339.80/x
  3. Step 3: Cross multiply
    81,657,008.60x = 122,485,512.90 × 40,842,339.80
  4. Step 4: Simplify right side
    81,657,008.60x = 5,002,594,938,439,083
  5. Step 5: Solve for x
    x = 5,002,594,938,439,083/81,657,008.60
  6. Step 6: Final answer
    x = 61,263,509.70

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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.