Home / 81,465.09-112,490.28-61,286.91

Finding the Fourth Proportional to 81,465.09, 112,490.28 and 61,286.91

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Solution

The fourth proportional to 81,465.09, 112,490.28 and 61,286.91 is: 84,627.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,465.09 : 112,490.28 = 61,286.91 : x
  2. Step 2: Convert to fraction form
    81,465.09/112,490.28 = 61,286.91/x
  3. Step 3: Cross multiply
    81,465.09x = 112,490.28 × 61,286.91
  4. Step 4: Simplify right side
    81,465.09x = 6,894,181,666.23
  5. Step 5: Solve for x
    x = 6,894,181,666.23/81,465.09
  6. Step 6: Final answer
    x = 84,627.44

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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.