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Finding the Fourth Proportional to 72,673.84, 100,280.88 and 42,052.20

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Solution

The fourth proportional to 72,673.84, 100,280.88 and 42,052.20 is: 58,026.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,673.84 : 100,280.88 = 42,052.20 : x
  2. Step 2: Convert to fraction form
    72,673.84/100,280.88 = 42,052.20/x
  3. Step 3: Cross multiply
    72,673.84x = 100,280.88 × 42,052.20
  4. Step 4: Simplify right side
    72,673.84x = 4,217,031,621.94
  5. Step 5: Solve for x
    x = 4,217,031,621.94/72,673.84
  6. Step 6: Final answer
    x = 58,026.82

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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.