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Finding the Fourth Proportional to 86,172.60, 118,925.10 and 48,444.60

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Solution

The fourth proportional to 86,172.60, 118,925.10 and 48,444.60 is: 66,857.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,172.60 : 118,925.10 = 48,444.60 : x
  2. Step 2: Convert to fraction form
    86,172.60/118,925.10 = 48,444.60/x
  3. Step 3: Cross multiply
    86,172.60x = 118,925.10 × 48,444.60
  4. Step 4: Simplify right side
    86,172.60x = 5,761,278,899.46
  5. Step 5: Solve for x
    x = 5,761,278,899.46/86,172.60
  6. Step 6: Final answer
    x = 66,857.43

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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.