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Finding the Fourth Proportional to 79,106.84, 109,140.28 and 45,090.79

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Solution

The fourth proportional to 79,106.84, 109,140.28 and 45,090.79 is: 62,209.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,106.84 : 109,140.28 = 45,090.79 : x
  2. Step 2: Convert to fraction form
    79,106.84/109,140.28 = 45,090.79/x
  3. Step 3: Cross multiply
    79,106.84x = 109,140.28 × 45,090.79
  4. Step 4: Simplify right side
    79,106.84x = 4,921,221,446.02
  5. Step 5: Solve for x
    x = 4,921,221,446.02/79,106.84
  6. Step 6: Final answer
    x = 62,209.81

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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.