Home / 85,440,345.30-128,160,517.95-27,938,429.10

Finding the Fourth Proportional to 85,440,345.30, 128,160,517.95 and 27,938,429.10

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Solution

The fourth proportional to 85,440,345.30, 128,160,517.95 and 27,938,429.10 is: 41,907,643.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,440,345.30 : 128,160,517.95 = 27,938,429.10 : x
  2. Step 2: Convert to fraction form
    85,440,345.30/128,160,517.95 = 27,938,429.10/x
  3. Step 3: Cross multiply
    85,440,345.30x = 128,160,517.95 × 27,938,429.10
  4. Step 4: Simplify right side
    85,440,345.30x = 3,580,603,544,165,352.50
  5. Step 5: Solve for x
    x = 3,580,603,544,165,352.50/85,440,345.30
  6. Step 6: Final answer
    x = 41,907,643.65

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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.