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Finding the Fourth Proportional to 61,018.80, 91,522.68 and 21,573.96

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Solution

The fourth proportional to 61,018.80, 91,522.68 and 21,573.96 is: 32,358.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,018.80 : 91,522.68 = 21,573.96 : x
  2. Step 2: Convert to fraction form
    61,018.80/91,522.68 = 21,573.96/x
  3. Step 3: Cross multiply
    61,018.80x = 91,522.68 × 21,573.96
  4. Step 4: Simplify right side
    61,018.80x = 1,974,506,637.41
  5. Step 5: Solve for x
    x = 1,974,506,637.41/61,018.80
  6. Step 6: Final answer
    x = 32,358.99

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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.