Home / 56,528.12-78,005.70-31,376.12

Finding the Fourth Proportional to 56,528.12, 78,005.70 and 31,376.12

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Solution

The fourth proportional to 56,528.12, 78,005.70 and 31,376.12 is: 43,297.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,528.12 : 78,005.70 = 31,376.12 : x
  2. Step 2: Convert to fraction form
    56,528.12/78,005.70 = 31,376.12/x
  3. Step 3: Cross multiply
    56,528.12x = 78,005.70 × 31,376.12
  4. Step 4: Simplify right side
    56,528.12x = 2,447,516,203.88
  5. Step 5: Solve for x
    x = 2,447,516,203.88/56,528.12
  6. Step 6: Final answer
    x = 43,297.32

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Find fourth proportional to 56,529.12, 78,007.08 and 31,377.12
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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.