Home / 70,340.20-97,215.78-56,343.40

Finding the Fourth Proportional to 70,340.20, 97,215.78 and 56,343.40

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Solution

The fourth proportional to 70,340.20, 97,215.78 and 56,343.40 is: 77,871.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,340.20 : 97,215.78 = 56,343.40 : x
  2. Step 2: Convert to fraction form
    70,340.20/97,215.78 = 56,343.40/x
  3. Step 3: Cross multiply
    70,340.20x = 97,215.78 × 56,343.40
  4. Step 4: Simplify right side
    70,340.20x = 5,477,467,578.85
  5. Step 5: Solve for x
    x = 5,477,467,578.85/70,340.20
  6. Step 6: Final answer
    x = 77,871.08

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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.