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Finding the Fourth Proportional to 58,653.63, 87,981.88 and 19,209.15

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Solution

The fourth proportional to 58,653.63, 87,981.88 and 19,209.15 is: 28,814.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,653.63 : 87,981.88 = 19,209.15 : x
  2. Step 2: Convert to fraction form
    58,653.63/87,981.88 = 19,209.15/x
  3. Step 3: Cross multiply
    58,653.63x = 87,981.88 × 19,209.15
  4. Step 4: Simplify right side
    58,653.63x = 1,690,057,130.20
  5. Step 5: Solve for x
    x = 1,690,057,130.20/58,653.63
  6. Step 6: Final answer
    x = 28,814.19

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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.