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Finding the Fourth Proportional to 85,707.85, 128,483.01 and 29,534.59

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Solution

The fourth proportional to 85,707.85, 128,483.01 and 29,534.59 is: 44,274.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,707.85 : 128,483.01 = 29,534.59 : x
  2. Step 2: Convert to fraction form
    85,707.85/128,483.01 = 29,534.59/x
  3. Step 3: Cross multiply
    85,707.85x = 128,483.01 × 29,534.59
  4. Step 4: Simplify right side
    85,707.85x = 3,794,693,022.32
  5. Step 5: Solve for x
    x = 3,794,693,022.32/85,707.85
  6. Step 6: Final answer
    x = 44,274.74

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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.