Home / 87,660.40-131,490.60-61,416.40

Finding the Fourth Proportional to 87,660.40, 131,490.60 and 61,416.40

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Solution

The fourth proportional to 87,660.40, 131,490.60 and 61,416.40 is: 92,124.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,660.40 : 131,490.60 = 61,416.40 : x
  2. Step 2: Convert to fraction form
    87,660.40/131,490.60 = 61,416.40/x
  3. Step 3: Cross multiply
    87,660.40x = 131,490.60 × 61,416.40
  4. Step 4: Simplify right side
    87,660.40x = 8,075,679,285.84
  5. Step 5: Solve for x
    x = 8,075,679,285.84/87,660.40
  6. Step 6: Final answer
    x = 92,124.60

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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.