Home / 81,688.77-112,726.35-45,880.29

Finding the Fourth Proportional to 81,688.77, 112,726.35 and 45,880.29

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Solution

The fourth proportional to 81,688.77, 112,726.35 and 45,880.29 is: 63,312.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,688.77 : 112,726.35 = 45,880.29 : x
  2. Step 2: Convert to fraction form
    81,688.77/112,726.35 = 45,880.29/x
  3. Step 3: Cross multiply
    81,688.77x = 112,726.35 × 45,880.29
  4. Step 4: Simplify right side
    81,688.77x = 5,171,917,628.64
  5. Step 5: Solve for x
    x = 5,171,917,628.64/81,688.77
  6. Step 6: Final answer
    x = 63,312.47

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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.