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Finding the Fourth Proportional to 85,530.39, 118,027.15 and 47,287.70

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Solution

The fourth proportional to 85,530.39, 118,027.15 and 47,287.70 is: 65,254.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,530.39 : 118,027.15 = 47,287.70 : x
  2. Step 2: Convert to fraction form
    85,530.39/118,027.15 = 47,287.70/x
  3. Step 3: Cross multiply
    85,530.39x = 118,027.15 × 47,287.70
  4. Step 4: Simplify right side
    85,530.39x = 5,581,232,461.06
  5. Step 5: Solve for x
    x = 5,581,232,461.06/85,530.39
  6. Step 6: Final answer
    x = 65,254.38

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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.