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Finding the Fourth Proportional to 85,612.86, 118,154.64 and 49,315.56

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Solution

The fourth proportional to 85,612.86, 118,154.64 and 49,315.56 is: 68,060.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,612.86 : 118,154.64 = 49,315.56 : x
  2. Step 2: Convert to fraction form
    85,612.86/118,154.64 = 49,315.56/x
  3. Step 3: Cross multiply
    85,612.86x = 118,154.64 × 49,315.56
  4. Step 4: Simplify right side
    85,612.86x = 5,826,862,238.20
  5. Step 5: Solve for x
    x = 5,826,862,238.20/85,612.86
  6. Step 6: Final answer
    x = 68,060.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.