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Finding the Fourth Proportional to 79,484.40, 109,698.84 and 51,272.10

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Solution

The fourth proportional to 79,484.40, 109,698.84 and 51,272.10 is: 70,762.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,484.40 : 109,698.84 = 51,272.10 : x
  2. Step 2: Convert to fraction form
    79,484.40/109,698.84 = 51,272.10/x
  3. Step 3: Cross multiply
    79,484.40x = 109,698.84 × 51,272.10
  4. Step 4: Simplify right side
    79,484.40x = 5,624,489,894.36
  5. Step 5: Solve for x
    x = 5,624,489,894.36/79,484.40
  6. Step 6: Final answer
    x = 70,762.19

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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.