Home / 81,946,070.80-122,883,676.80-40,989,684.40

Finding the Fourth Proportional to 81,946,070.80, 122,883,676.80 and 40,989,684.40

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Solution

The fourth proportional to 81,946,070.80, 122,883,676.80 and 40,989,684.40 is: 61,466,804.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,946,070.80 : 122,883,676.80 = 40,989,684.40 : x
  2. Step 2: Convert to fraction form
    81,946,070.80/122,883,676.80 = 40,989,684.40/x
  3. Step 3: Cross multiply
    81,946,070.80x = 122,883,676.80 × 40,989,684.40
  4. Step 4: Simplify right side
    81,946,070.80x = 5,036,963,129,943,602
  5. Step 5: Solve for x
    x = 5,036,963,129,943,602/81,946,070.80
  6. Step 6: Final answer
    x = 61,466,804.70

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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.