Home / 78,457.28-108,282.89-47,848.14

Finding the Fourth Proportional to 78,457.28, 108,282.89 and 47,848.14

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Solution

The fourth proportional to 78,457.28, 108,282.89 and 47,848.14 is: 66,037.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,457.28 : 108,282.89 = 47,848.14 : x
  2. Step 2: Convert to fraction form
    78,457.28/108,282.89 = 47,848.14/x
  3. Step 3: Cross multiply
    78,457.28x = 108,282.89 × 47,848.14
  4. Step 4: Simplify right side
    78,457.28x = 5,181,134,625.35
  5. Step 5: Solve for x
    x = 5,181,134,625.35/78,457.28
  6. Step 6: Final answer
    x = 66,037.65

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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.