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Finding the Fourth Proportional to 87,075.07, 130,670.85 and 31,671.07

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Solution

The fourth proportional to 87,075.07, 130,670.85 and 31,671.07 is: 47,527.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,075.07 : 130,670.85 = 31,671.07 : x
  2. Step 2: Convert to fraction form
    87,075.07/130,670.85 = 31,671.07/x
  3. Step 3: Cross multiply
    87,075.07x = 130,670.85 × 31,671.07
  4. Step 4: Simplify right side
    87,075.07x = 4,138,485,429.40
  5. Step 5: Solve for x
    x = 4,138,485,429.40/87,075.07
  6. Step 6: Final answer
    x = 47,527.79

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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.