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Finding the Fourth Proportional to 58,687.90, 81,002.09 and 36,038.79

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Solution

The fourth proportional to 58,687.90, 81,002.09 and 36,038.79 is: 49,741.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,687.90 : 81,002.09 = 36,038.79 : x
  2. Step 2: Convert to fraction form
    58,687.90/81,002.09 = 36,038.79/x
  3. Step 3: Cross multiply
    58,687.90x = 81,002.09 × 36,038.79
  4. Step 4: Simplify right side
    58,687.90x = 2,919,217,401.17
  5. Step 5: Solve for x
    x = 2,919,217,401.17/58,687.90
  6. Step 6: Final answer
    x = 49,741.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.