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Finding the Fourth Proportional to 85,753.74, 128,643.06 and 26,594.18

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Solution

The fourth proportional to 85,753.74, 128,643.06 and 26,594.18 is: 39,895.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,753.74 : 128,643.06 = 26,594.18 : x
  2. Step 2: Convert to fraction form
    85,753.74/128,643.06 = 26,594.18/x
  3. Step 3: Cross multiply
    85,753.74x = 128,643.06 × 26,594.18
  4. Step 4: Simplify right side
    85,753.74x = 3,421,156,050.18
  5. Step 5: Solve for x
    x = 3,421,156,050.18/85,753.74
  6. Step 6: Final answer
    x = 39,895.12

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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.