Home / 81,717.40-112,763.10-45,904.60

Finding the Fourth Proportional to 81,717.40, 112,763.10 and 45,904.60

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Solution

The fourth proportional to 81,717.40, 112,763.10 and 45,904.60 is: 63,344.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,717.40 : 112,763.10 = 45,904.60 : x
  2. Step 2: Convert to fraction form
    81,717.40/112,763.10 = 45,904.60/x
  3. Step 3: Cross multiply
    81,717.40x = 112,763.10 × 45,904.60
  4. Step 4: Simplify right side
    81,717.40x = 5,176,345,000.26
  5. Step 5: Solve for x
    x = 5,176,345,000.26/81,717.40
  6. Step 6: Final answer
    x = 63,344.47

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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.