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Finding the Fourth Proportional to 84,774.56, 126,928.08 and 56,655.81

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Solution

The fourth proportional to 84,774.56, 126,928.08 and 56,655.81 is: 84,827.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,774.56 : 126,928.08 = 56,655.81 : x
  2. Step 2: Convert to fraction form
    84,774.56/126,928.08 = 56,655.81/x
  3. Step 3: Cross multiply
    84,774.56x = 126,928.08 × 56,655.81
  4. Step 4: Simplify right side
    84,774.56x = 7,191,213,184.14
  5. Step 5: Solve for x
    x = 7,191,213,184.14/84,774.56
  6. Step 6: Final answer
    x = 84,827.50

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.