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Finding the Fourth Proportional to 85,799.45, 128,744.04 and 62,301.09

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Solution

The fourth proportional to 85,799.45, 128,744.04 and 62,301.09 is: 93,484.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,799.45 : 128,744.04 = 62,301.09 : x
  2. Step 2: Convert to fraction form
    85,799.45/128,744.04 = 62,301.09/x
  3. Step 3: Cross multiply
    85,799.45x = 128,744.04 × 62,301.09
  4. Step 4: Simplify right side
    85,799.45x = 8,020,894,023.00
  5. Step 5: Solve for x
    x = 8,020,894,023.00/85,799.45
  6. Step 6: Final answer
    x = 93,484.22

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1.5x scale

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.