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Finding the Fourth Proportional to 76,551.64, 105,628.48 and 42,559.16

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Solution

The fourth proportional to 76,551.64, 105,628.48 and 42,559.16 is: 58,724.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,551.64 : 105,628.48 = 42,559.16 : x
  2. Step 2: Convert to fraction form
    76,551.64/105,628.48 = 42,559.16/x
  3. Step 3: Cross multiply
    76,551.64x = 105,628.48 × 42,559.16
  4. Step 4: Simplify right side
    76,551.64x = 4,495,459,380.88
  5. Step 5: Solve for x
    x = 4,495,459,380.88/76,551.64
  6. Step 6: Final answer
    x = 58,724.53

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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.