Home / 86,742.28-119,761.50-56,172.88

Finding the Fourth Proportional to 86,742.28, 119,761.50 and 56,172.88

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Solution

The fourth proportional to 86,742.28, 119,761.50 and 56,172.88 is: 77,555.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,742.28 : 119,761.50 = 56,172.88 : x
  2. Step 2: Convert to fraction form
    86,742.28/119,761.50 = 56,172.88/x
  3. Step 3: Cross multiply
    86,742.28x = 119,761.50 × 56,172.88
  4. Step 4: Simplify right side
    86,742.28x = 6,727,348,368.12
  5. Step 5: Solve for x
    x = 6,727,348,368.12/86,742.28
  6. Step 6: Final answer
    x = 77,555.59

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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.