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Finding the Fourth Proportional to 85,864.91, 118,507.76 and 47,636.77

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Solution

The fourth proportional to 85,864.91, 118,507.76 and 47,636.77 is: 65,746.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,864.91 : 118,507.76 = 47,636.77 : x
  2. Step 2: Convert to fraction form
    85,864.91/118,507.76 = 47,636.77/x
  3. Step 3: Cross multiply
    85,864.91x = 118,507.76 × 47,636.77
  4. Step 4: Simplify right side
    85,864.91x = 5,645,327,106.02
  5. Step 5: Solve for x
    x = 5,645,327,106.02/85,864.91
  6. Step 6: Final answer
    x = 65,746.61

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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.