Home / 57,011.32-78,702.06-33,129.28

Finding the Fourth Proportional to 57,011.32, 78,702.06 and 33,129.28

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Solution

The fourth proportional to 57,011.32, 78,702.06 and 33,129.28 is: 45,733.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,011.32 : 78,702.06 = 33,129.28 : x
  2. Step 2: Convert to fraction form
    57,011.32/78,702.06 = 33,129.28/x
  3. Step 3: Cross multiply
    57,011.32x = 78,702.06 × 33,129.28
  4. Step 4: Simplify right side
    57,011.32x = 2,607,342,582.32
  5. Step 5: Solve for x
    x = 2,607,342,582.32/57,011.32
  6. Step 6: Final answer
    x = 45,733.77

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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.