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Finding the Fourth Proportional to 85,698.64, 118,265.60 and 46,939.92

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Solution

The fourth proportional to 85,698.64, 118,265.60 and 46,939.92 is: 64,777.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,698.64 : 118,265.60 = 46,939.92 : x
  2. Step 2: Convert to fraction form
    85,698.64/118,265.60 = 46,939.92/x
  3. Step 3: Cross multiply
    85,698.64x = 118,265.60 × 46,939.92
  4. Step 4: Simplify right side
    85,698.64x = 5,551,377,802.75
  5. Step 5: Solve for x
    x = 5,551,377,802.75/85,698.64
  6. Step 6: Final answer
    x = 64,777.90

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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.