Home / 81,543.16-112,481.77-51,280.48

Finding the Fourth Proportional to 81,543.16, 112,481.77 and 51,280.48

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Solution

The fourth proportional to 81,543.16, 112,481.77 and 51,280.48 is: 70,737.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,543.16 : 112,481.77 = 51,280.48 : x
  2. Step 2: Convert to fraction form
    81,543.16/112,481.77 = 51,280.48/x
  3. Step 3: Cross multiply
    81,543.16x = 112,481.77 × 51,280.48
  4. Step 4: Simplify right side
    81,543.16x = 5,768,118,338.04
  5. Step 5: Solve for x
    x = 5,768,118,338.04/81,543.16
  6. Step 6: Final answer
    x = 70,737.00

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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.