Home / 81,420,312.40-122,130,468.60-36,070,680.40

Finding the Fourth Proportional to 81,420,312.40, 122,130,468.60 and 36,070,680.40

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Solution

The fourth proportional to 81,420,312.40, 122,130,468.60 and 36,070,680.40 is: 54,106,020.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,420,312.40 : 122,130,468.60 = 36,070,680.40 : x
  2. Step 2: Convert to fraction form
    81,420,312.40/122,130,468.60 = 36,070,680.40/x
  3. Step 3: Cross multiply
    81,420,312.40x = 122,130,468.60 × 36,070,680.40
  4. Step 4: Simplify right side
    81,420,312.40x = 4,405,329,099,972,835
  5. Step 5: Solve for x
    x = 4,405,329,099,972,835/81,420,312.40
  6. Step 6: Final answer
    x = 54,106,020.60

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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.