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Finding the Fourth Proportional to 72,496.95, 100,126.85 and 49,905.24

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Solution

The fourth proportional to 72,496.95, 100,126.85 and 49,905.24 is: 68,925.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,496.95 : 100,126.85 = 49,905.24 : x
  2. Step 2: Convert to fraction form
    72,496.95/100,126.85 = 49,905.24/x
  3. Step 3: Cross multiply
    72,496.95x = 100,126.85 × 49,905.24
  4. Step 4: Simplify right side
    72,496.95x = 4,996,854,230.17
  5. Step 5: Solve for x
    x = 4,996,854,230.17/72,496.95
  6. Step 6: Final answer
    x = 68,925.03

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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.