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Finding the Fourth Proportional to 85,656.86, 118,205.03 and 47,415.60

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Solution

The fourth proportional to 85,656.86, 118,205.03 and 47,415.60 is: 65,432.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,656.86 : 118,205.03 = 47,415.60 : x
  2. Step 2: Convert to fraction form
    85,656.86/118,205.03 = 47,415.60/x
  3. Step 3: Cross multiply
    85,656.86x = 118,205.03 × 47,415.60
  4. Step 4: Simplify right side
    85,656.86x = 5,604,761,888.71
  5. Step 5: Solve for x
    x = 5,604,761,888.71/85,656.86
  6. Step 6: Final answer
    x = 65,432.73

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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.