Home / 81,685.04-112,712.13-51,054.53

Finding the Fourth Proportional to 81,685.04, 112,712.13 and 51,054.53

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Solution

The fourth proportional to 81,685.04, 112,712.13 and 51,054.53 is: 70,446.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,685.04 : 112,712.13 = 51,054.53 : x
  2. Step 2: Convert to fraction form
    81,685.04/112,712.13 = 51,054.53/x
  3. Step 3: Cross multiply
    81,685.04x = 112,712.13 × 51,054.53
  4. Step 4: Simplify right side
    81,685.04x = 5,754,464,258.89
  5. Step 5: Solve for x
    x = 5,754,464,258.89/81,685.04
  6. Step 6: Final answer
    x = 70,446.98

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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.