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Finding the Fourth Proportional to 78,602.66, 108,287.25 and 54,688.22

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Solution

The fourth proportional to 78,602.66, 108,287.25 and 54,688.22 is: 75,341.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,602.66 : 108,287.25 = 54,688.22 : x
  2. Step 2: Convert to fraction form
    78,602.66/108,287.25 = 54,688.22/x
  3. Step 3: Cross multiply
    78,602.66x = 108,287.25 × 54,688.22
  4. Step 4: Simplify right side
    78,602.66x = 5,922,036,951.20
  5. Step 5: Solve for x
    x = 5,922,036,951.20/78,602.66
  6. Step 6: Final answer
    x = 75,341.43

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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.