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Finding the Fourth Proportional to 73,134.60, 100,920.51 and 42,921.15

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Solution

The fourth proportional to 73,134.60, 100,920.51 and 42,921.15 is: 59,228.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,134.60 : 100,920.51 = 42,921.15 : x
  2. Step 2: Convert to fraction form
    73,134.60/100,920.51 = 42,921.15/x
  3. Step 3: Cross multiply
    73,134.60x = 100,920.51 × 42,921.15
  4. Step 4: Simplify right side
    73,134.60x = 4,331,624,347.79
  5. Step 5: Solve for x
    x = 4,331,624,347.79/73,134.60
  6. Step 6: Final answer
    x = 59,228.11

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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.