Home / 84,844.32-127,260-28,689.12

Finding the Fourth Proportional to 84,844.32, 127,260 and 28,689.12

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Solution

The fourth proportional to 84,844.32, 127,260 and 28,689.12 is: 43,031.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,844.32 : 127,260 = 28,689.12 : x
  2. Step 2: Convert to fraction form
    84,844.32/127,260 = 28,689.12/x
  3. Step 3: Cross multiply
    84,844.32x = 127,260 × 28,689.12
  4. Step 4: Simplify right side
    84,844.32x = 3,650,977,411.20
  5. Step 5: Solve for x
    x = 3,650,977,411.20/84,844.32
  6. Step 6: Final answer
    x = 43,031.49

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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.