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Finding the Fourth Proportional to 51,210.80, 70,673.64 and 29,991.68

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Solution

The fourth proportional to 51,210.80, 70,673.64 and 29,991.68 is: 41,390.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,210.80 : 70,673.64 = 29,991.68 : x
  2. Step 2: Convert to fraction form
    51,210.80/70,673.64 = 29,991.68/x
  3. Step 3: Cross multiply
    51,210.80x = 70,673.64 × 29,991.68
  4. Step 4: Simplify right side
    51,210.80x = 2,119,621,195.32
  5. Step 5: Solve for x
    x = 2,119,621,195.32/51,210.80
  6. Step 6: Final answer
    x = 41,390.12

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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.