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Finding the Fourth Proportional to 81,308.66, 112,210.64 and 45,498.36

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Solution

The fourth proportional to 81,308.66, 112,210.64 and 45,498.36 is: 62,790.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,308.66 : 112,210.64 = 45,498.36 : x
  2. Step 2: Convert to fraction form
    81,308.66/112,210.64 = 45,498.36/x
  3. Step 3: Cross multiply
    81,308.66x = 112,210.64 × 45,498.36
  4. Step 4: Simplify right side
    81,308.66x = 5,105,400,094.55
  5. Step 5: Solve for x
    x = 5,105,400,094.55/81,308.66
  6. Step 6: Final answer
    x = 62,790.36

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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.