Home / 85,956.39-129,079.99-56,021.49

Finding the Fourth Proportional to 85,956.39, 129,079.99 and 56,021.49

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Solution

The fourth proportional to 85,956.39, 129,079.99 and 56,021.49 is: 84,127.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,956.39 : 129,079.99 = 56,021.49 : x
  2. Step 2: Convert to fraction form
    85,956.39/129,079.99 = 56,021.49/x
  3. Step 3: Cross multiply
    85,956.39x = 129,079.99 × 56,021.49
  4. Step 4: Simplify right side
    85,956.39x = 7,231,253,368.99
  5. Step 5: Solve for x
    x = 7,231,253,368.99/85,956.39
  6. Step 6: Final answer
    x = 84,127.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.