Home / 81,919,230.77-122,878,004.04-47,353,638.45

Finding the Fourth Proportional to 81,919,230.77, 122,878,004.04 and 47,353,638.45

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Solution

The fourth proportional to 81,919,230.77, 122,878,004.04 and 47,353,638.45 is: 71,029,970.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,919,230.77 : 122,878,004.04 = 47,353,638.45 : x
  2. Step 2: Convert to fraction form
    81,919,230.77/122,878,004.04 = 47,353,638.45/x
  3. Step 3: Cross multiply
    81,919,230.77x = 122,878,004.04 × 47,353,638.45
  4. Step 4: Simplify right side
    81,919,230.77x = 5,818,720,576,767,800
  5. Step 5: Solve for x
    x = 5,818,720,576,767,800/81,919,230.77
  6. Step 6: Final answer
    x = 71,029,970.89

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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.