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Finding the Fourth Proportional to 85,897.80, 118,534.96 and 47,656.94

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Solution

The fourth proportional to 85,897.80, 118,534.96 and 47,656.94 is: 65,764.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,897.80 : 118,534.96 = 47,656.94 : x
  2. Step 2: Convert to fraction form
    85,897.80/118,534.96 = 47,656.94/x
  3. Step 3: Cross multiply
    85,897.80x = 118,534.96 × 47,656.94
  4. Step 4: Simplify right side
    85,897.80x = 5,649,013,476.62
  5. Step 5: Solve for x
    x = 5,649,013,476.62/85,897.80
  6. Step 6: Final answer
    x = 65,764.36

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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.