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Finding the Fourth Proportional to 85,663.36, 118,215.68 and 47,934.72

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Solution

The fourth proportional to 85,663.36, 118,215.68 and 47,934.72 is: 66,150.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,663.36 : 118,215.68 = 47,934.72 : x
  2. Step 2: Convert to fraction form
    85,663.36/118,215.68 = 47,934.72/x
  3. Step 3: Cross multiply
    85,663.36x = 118,215.68 × 47,934.72
  4. Step 4: Simplify right side
    85,663.36x = 5,666,635,520.41
  5. Step 5: Solve for x
    x = 5,666,635,520.41/85,663.36
  6. Step 6: Final answer
    x = 66,150.05

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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.