Home / 78,050.64-117,076.26-18,886.22

Finding the Fourth Proportional to 78,050.64, 117,076.26 and 18,886.22

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Solution

The fourth proportional to 78,050.64, 117,076.26 and 18,886.22 is: 28,329.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,050.64 : 117,076.26 = 18,886.22 : x
  2. Step 2: Convert to fraction form
    78,050.64/117,076.26 = 18,886.22/x
  3. Step 3: Cross multiply
    78,050.64x = 117,076.26 × 18,886.22
  4. Step 4: Simplify right side
    78,050.64x = 2,211,127,417.76
  5. Step 5: Solve for x
    x = 2,211,127,417.76/78,050.64
  6. Step 6: Final answer
    x = 28,329.40

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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.