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Finding the Fourth Proportional to 85,980.86, 118,654.08 and 47,740.94

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Solution

The fourth proportional to 85,980.86, 118,654.08 and 47,740.94 is: 65,882.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,980.86 : 118,654.08 = 47,740.94 : x
  2. Step 2: Convert to fraction form
    85,980.86/118,654.08 = 47,740.94/x
  3. Step 3: Cross multiply
    85,980.86x = 118,654.08 × 47,740.94
  4. Step 4: Simplify right side
    85,980.86x = 5,664,657,314.04
  5. Step 5: Solve for x
    x = 5,664,657,314.04/85,980.86
  6. Step 6: Final answer
    x = 65,882.77

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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.