Home / 78,292.71-117,434.88-27,688.23

Finding the Fourth Proportional to 78,292.71, 117,434.88 and 27,688.23

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Solution

The fourth proportional to 78,292.71, 117,434.88 and 27,688.23 is: 41,530.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,292.71 : 117,434.88 = 27,688.23 : x
  2. Step 2: Convert to fraction form
    78,292.71/117,434.88 = 27,688.23/x
  3. Step 3: Cross multiply
    78,292.71x = 117,434.88 × 27,688.23
  4. Step 4: Simplify right side
    78,292.71x = 3,251,563,967.46
  5. Step 5: Solve for x
    x = 3,251,563,967.46/78,292.71
  6. Step 6: Final answer
    x = 41,530.86

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1.5x scale

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.