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Finding the Fourth Proportional to 81,617.58, 112,643.25 and 45,809.55

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Solution

The fourth proportional to 81,617.58, 112,643.25 and 45,809.55 is: 63,223.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,617.58 : 112,643.25 = 45,809.55 : x
  2. Step 2: Convert to fraction form
    81,617.58/112,643.25 = 45,809.55/x
  3. Step 3: Cross multiply
    81,617.58x = 112,643.25 × 45,809.55
  4. Step 4: Simplify right side
    81,617.58x = 5,160,136,593.04
  5. Step 5: Solve for x
    x = 5,160,136,593.04/81,617.58
  6. Step 6: Final answer
    x = 63,223.35

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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.