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Finding the Fourth Proportional to 85,580.88, 128,354.04 and 59,522.64

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Solution

The fourth proportional to 85,580.88, 128,354.04 and 59,522.64 is: 89,271.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,580.88 : 128,354.04 = 59,522.64 : x
  2. Step 2: Convert to fraction form
    85,580.88/128,354.04 = 59,522.64/x
  3. Step 3: Cross multiply
    85,580.88x = 128,354.04 × 59,522.64
  4. Step 4: Simplify right side
    85,580.88x = 7,639,971,315.47
  5. Step 5: Solve for x
    x = 7,639,971,315.47/85,580.88
  6. Step 6: Final answer
    x = 89,271.94

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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.