Home / 81,258.64-112,160.76-47,275.12

Finding the Fourth Proportional to 81,258.64, 112,160.76 and 47,275.12

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Solution

The fourth proportional to 81,258.64, 112,160.76 and 47,275.12 is: 65,253.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,258.64 : 112,160.76 = 47,275.12 : x
  2. Step 2: Convert to fraction form
    81,258.64/112,160.76 = 47,275.12/x
  3. Step 3: Cross multiply
    81,258.64x = 112,160.76 × 47,275.12
  4. Step 4: Simplify right side
    81,258.64x = 5,302,413,388.29
  5. Step 5: Solve for x
    x = 5,302,413,388.29/81,258.64
  6. Step 6: Final answer
    x = 65,253.53

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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.