Home / 51,138.36-70,570.76-28,477.64

Finding the Fourth Proportional to 51,138.36, 70,570.76 and 28,477.64

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Solution

The fourth proportional to 51,138.36, 70,570.76 and 28,477.64 is: 39,299.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,138.36 : 70,570.76 = 28,477.64 : x
  2. Step 2: Convert to fraction form
    51,138.36/70,570.76 = 28,477.64/x
  3. Step 3: Cross multiply
    51,138.36x = 70,570.76 × 28,477.64
  4. Step 4: Simplify right side
    51,138.36x = 2,009,688,697.81
  5. Step 5: Solve for x
    x = 2,009,688,697.81/51,138.36
  6. Step 6: Final answer
    x = 39,299.04

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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.