Home / 83,620,011.70-125,430,017.55-66,401,323.30

Finding the Fourth Proportional to 83,620,011.70, 125,430,017.55 and 66,401,323.30

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Solution

The fourth proportional to 83,620,011.70, 125,430,017.55 and 66,401,323.30 is: 99,601,984.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,620,011.70 : 125,430,017.55 = 66,401,323.30 : x
  2. Step 2: Convert to fraction form
    83,620,011.70/125,430,017.55 = 66,401,323.30/x
  3. Step 3: Cross multiply
    83,620,011.70x = 125,430,017.55 × 66,401,323.30
  4. Step 4: Simplify right side
    83,620,011.70x = 8,328,719,146,862,223
  5. Step 5: Solve for x
    x = 8,328,719,146,862,223/83,620,011.70
  6. Step 6: Final answer
    x = 99,601,984.95

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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.