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Finding the Fourth Proportional to 58,378, 87,544.32 and 18,925.60

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Solution

The fourth proportional to 58,378, 87,544.32 and 18,925.60 is: 28,381.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,378 : 87,544.32 = 18,925.60 : x
  2. Step 2: Convert to fraction form
    58,378/87,544.32 = 18,925.60/x
  3. Step 3: Cross multiply
    58,378x = 87,544.32 × 18,925.60
  4. Step 4: Simplify right side
    58,378x = 1,656,828,782.59
  5. Step 5: Solve for x
    x = 1,656,828,782.59/58,378
  6. Step 6: Final answer
    x = 28,381.05

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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.