Home / 81,685.58-112,726.12-45,875.64

Finding the Fourth Proportional to 81,685.58, 112,726.12 and 45,875.64

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Solution

The fourth proportional to 81,685.58, 112,726.12 and 45,875.64 is: 63,308.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,685.58 : 112,726.12 = 45,875.64 : x
  2. Step 2: Convert to fraction form
    81,685.58/112,726.12 = 45,875.64/x
  3. Step 3: Cross multiply
    81,685.58x = 112,726.12 × 45,875.64
  4. Step 4: Simplify right side
    81,685.58x = 5,171,382,899.72
  5. Step 5: Solve for x
    x = 5,171,382,899.72/81,685.58
  6. Step 6: Final answer
    x = 63,308.39

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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.