Home / 81,801.02-112,847.52-47,810.95

Finding the Fourth Proportional to 81,801.02, 112,847.52 and 47,810.95

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Solution

The fourth proportional to 81,801.02, 112,847.52 and 47,810.95 is: 65,956.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,801.02 : 112,847.52 = 47,810.95 : x
  2. Step 2: Convert to fraction form
    81,801.02/112,847.52 = 47,810.95/x
  3. Step 3: Cross multiply
    81,801.02x = 112,847.52 × 47,810.95
  4. Step 4: Simplify right side
    81,801.02x = 5,395,347,033.52
  5. Step 5: Solve for x
    x = 5,395,347,033.52/81,801.02
  6. Step 6: Final answer
    x = 65,956.96

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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.