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Finding the Fourth Proportional to 87,329.40, 130,994.10 and 39,944.40

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Solution

The fourth proportional to 87,329.40, 130,994.10 and 39,944.40 is: 59,916.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,329.40 : 130,994.10 = 39,944.40 : x
  2. Step 2: Convert to fraction form
    87,329.40/130,994.10 = 39,944.40/x
  3. Step 3: Cross multiply
    87,329.40x = 130,994.10 × 39,944.40
  4. Step 4: Simplify right side
    87,329.40x = 5,232,480,728.04
  5. Step 5: Solve for x
    x = 5,232,480,728.04/87,329.40
  6. Step 6: Final answer
    x = 59,916.60

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1.5x scale

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.