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Finding the Fourth Proportional to 86,903.25, 119,926.49 and 47,159.25

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Solution

The fourth proportional to 86,903.25, 119,926.49 and 47,159.25 is: 65,079.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,903.25 : 119,926.49 = 47,159.25 : x
  2. Step 2: Convert to fraction form
    86,903.25/119,926.49 = 47,159.25/x
  3. Step 3: Cross multiply
    86,903.25x = 119,926.49 × 47,159.25
  4. Step 4: Simplify right side
    86,903.25x = 5,655,643,087.74
  5. Step 5: Solve for x
    x = 5,655,643,087.74/86,903.25
  6. Step 6: Final answer
    x = 65,079.77

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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.