Home / 81,507.61-112,480.19-45,697.60

Finding the Fourth Proportional to 81,507.61, 112,480.19 and 45,697.60

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Solution

The fourth proportional to 81,507.61, 112,480.19 and 45,697.60 is: 63,062.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,507.61 : 112,480.19 = 45,697.60 : x
  2. Step 2: Convert to fraction form
    81,507.61/112,480.19 = 45,697.60/x
  3. Step 3: Cross multiply
    81,507.61x = 112,480.19 × 45,697.60
  4. Step 4: Simplify right side
    81,507.61x = 5,140,074,168.14
  5. Step 5: Solve for x
    x = 5,140,074,168.14/81,507.61
  6. Step 6: Final answer
    x = 63,062.51

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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.