Home / 81,197.16-112,070.16-49,359.32

Finding the Fourth Proportional to 81,197.16, 112,070.16 and 49,359.32

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Solution

The fourth proportional to 81,197.16, 112,070.16 and 49,359.32 is: 68,126.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,197.16 : 112,070.16 = 49,359.32 : x
  2. Step 2: Convert to fraction form
    81,197.16/112,070.16 = 49,359.32/x
  3. Step 3: Cross multiply
    81,197.16x = 112,070.16 × 49,359.32
  4. Step 4: Simplify right side
    81,197.16x = 5,531,706,889.89
  5. Step 5: Solve for x
    x = 5,531,706,889.89/81,197.16
  6. Step 6: Final answer
    x = 68,126.85

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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.