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Finding the Fourth Proportional to 78,445.00, 108,253.44 and 42,635.22

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Solution

The fourth proportional to 78,445.00, 108,253.44 and 42,635.22 is: 58,836.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,445.00 : 108,253.44 = 42,635.22 : x
  2. Step 2: Convert to fraction form
    78,445.00/108,253.44 = 42,635.22/x
  3. Step 3: Cross multiply
    78,445.00x = 108,253.44 × 42,635.22
  4. Step 4: Simplify right side
    78,445.00x = 4,615,409,230.16
  5. Step 5: Solve for x
    x = 4,615,409,230.16/78,445.00
  6. Step 6: Final answer
    x = 58,836.25

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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.