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Finding the Fourth Proportional to 85,657.50, 118,259.19 and 55,901.34

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Solution

The fourth proportional to 85,657.50, 118,259.19 and 55,901.34 is: 77,177.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,657.50 : 118,259.19 = 55,901.34 : x
  2. Step 2: Convert to fraction form
    85,657.50/118,259.19 = 55,901.34/x
  3. Step 3: Cross multiply
    85,657.50x = 118,259.19 × 55,901.34
  4. Step 4: Simplify right side
    85,657.50x = 6,610,847,188.31
  5. Step 5: Solve for x
    x = 6,610,847,188.31/85,657.50
  6. Step 6: Final answer
    x = 77,177.68

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Half scale
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Double scale
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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.