Home / 85,776,389.40-128,664,584.10-49,370,712.60

Finding the Fourth Proportional to 85,776,389.40, 128,664,584.10 and 49,370,712.60

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Solution

The fourth proportional to 85,776,389.40, 128,664,584.10 and 49,370,712.60 is: 74,056,068.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,776,389.40 : 128,664,584.10 = 49,370,712.60 : x
  2. Step 2: Convert to fraction form
    85,776,389.40/128,664,584.10 = 49,370,712.60/x
  3. Step 3: Cross multiply
    85,776,389.40x = 128,664,584.10 × 49,370,712.60
  4. Step 4: Simplify right side
    85,776,389.40x = 6,352,262,203,399,630
  5. Step 5: Solve for x
    x = 6,352,262,203,399,630/85,776,389.40
  6. Step 6: Final answer
    x = 74,056,068.90

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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.