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Finding the Fourth Proportional to 71,210.40, 106,783.20 and 37,921.92

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Solution

The fourth proportional to 71,210.40, 106,783.20 and 37,921.92 is: 56,865.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,210.40 : 106,783.20 = 37,921.92 : x
  2. Step 2: Convert to fraction form
    71,210.40/106,783.20 = 37,921.92/x
  3. Step 3: Cross multiply
    71,210.40x = 106,783.20 × 37,921.92
  4. Step 4: Simplify right side
    71,210.40x = 4,049,423,967.74
  5. Step 5: Solve for x
    x = 4,049,423,967.74/71,210.40
  6. Step 6: Final answer
    x = 56,865.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.