Home / 85,120.77-127,592.45-47,625.87

Finding the Fourth Proportional to 85,120.77, 127,592.45 and 47,625.87

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Solution

The fourth proportional to 85,120.77, 127,592.45 and 47,625.87 is: 71,389.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,120.77 : 127,592.45 = 47,625.87 : x
  2. Step 2: Convert to fraction form
    85,120.77/127,592.45 = 47,625.87/x
  3. Step 3: Cross multiply
    85,120.77x = 127,592.45 × 47,625.87
  4. Step 4: Simplify right side
    85,120.77x = 6,076,700,917.78
  5. Step 5: Solve for x
    x = 6,076,700,917.78/85,120.77
  6. Step 6: Final answer
    x = 71,389.17

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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.