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Finding the Fourth Proportional to 81,609.93, 112,623.75 and 45,802.80

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Solution

The fourth proportional to 81,609.93, 112,623.75 and 45,802.80 is: 63,209.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,609.93 : 112,623.75 = 45,802.80 : x
  2. Step 2: Convert to fraction form
    81,609.93/112,623.75 = 45,802.80/x
  3. Step 3: Cross multiply
    81,609.93x = 112,623.75 × 45,802.80
  4. Step 4: Simplify right side
    81,609.93x = 5,158,483,096.50
  5. Step 5: Solve for x
    x = 5,158,483,096.50/81,609.93
  6. Step 6: Final answer
    x = 63,209.01

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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.