Home / 81,528.90-112,413.84-75,483.06

Finding the Fourth Proportional to 81,528.90, 112,413.84 and 75,483.06

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Solution

The fourth proportional to 81,528.90, 112,413.84 and 75,483.06 is: 104,077.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,528.90 : 112,413.84 = 75,483.06 : x
  2. Step 2: Convert to fraction form
    81,528.90/112,413.84 = 75,483.06/x
  3. Step 3: Cross multiply
    81,528.90x = 112,413.84 × 75,483.06
  4. Step 4: Simplify right side
    81,528.90x = 8,485,340,629.55
  5. Step 5: Solve for x
    x = 8,485,340,629.55/81,528.90
  6. Step 6: Final answer
    x = 104,077.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.