Home / 85,968,467.70-128,952,701.55-55,357,466.10

Finding the Fourth Proportional to 85,968,467.70, 128,952,701.55 and 55,357,466.10

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Solution

The fourth proportional to 85,968,467.70, 128,952,701.55 and 55,357,466.10 is: 83,036,199.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,968,467.70 : 128,952,701.55 = 55,357,466.10 : x
  2. Step 2: Convert to fraction form
    85,968,467.70/128,952,701.55 = 55,357,466.10/x
  3. Step 3: Cross multiply
    85,968,467.70x = 128,952,701.55 × 55,357,466.10
  4. Step 4: Simplify right side
    85,968,467.70x = 7,138,494,804,557,542
  5. Step 5: Solve for x
    x = 7,138,494,804,557,542/85,968,467.70
  6. Step 6: Final answer
    x = 83,036,199.15

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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.