Home / 81,171.76-112,088.28-51,009.34

Finding the Fourth Proportional to 81,171.76, 112,088.28 and 51,009.34

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Solution

The fourth proportional to 81,171.76, 112,088.28 and 51,009.34 is: 70,437.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,171.76 : 112,088.28 = 51,009.34 : x
  2. Step 2: Convert to fraction form
    81,171.76/112,088.28 = 51,009.34/x
  3. Step 3: Cross multiply
    81,171.76x = 112,088.28 × 51,009.34
  4. Step 4: Simplify right side
    81,171.76x = 5,717,549,184.54
  5. Step 5: Solve for x
    x = 5,717,549,184.54/81,171.76
  6. Step 6: Final answer
    x = 70,437.66

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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.