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Finding the Fourth Proportional to 56,999.40, 78,659.10 and 31,848.90

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Solution

The fourth proportional to 56,999.40, 78,659.10 and 31,848.90 is: 43,951.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,999.40 : 78,659.10 = 31,848.90 : x
  2. Step 2: Convert to fraction form
    56,999.40/78,659.10 = 31,848.90/x
  3. Step 3: Cross multiply
    56,999.40x = 78,659.10 × 31,848.90
  4. Step 4: Simplify right side
    56,999.40x = 2,505,205,809.99
  5. Step 5: Solve for x
    x = 2,505,205,809.99/56,999.40
  6. Step 6: Final answer
    x = 43,951.44

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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.