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Finding the Fourth Proportional to 72,248.34, 99,700.40 and 40,416.56

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Solution

The fourth proportional to 72,248.34, 99,700.40 and 40,416.56 is: 55,773.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,248.34 : 99,700.40 = 40,416.56 : x
  2. Step 2: Convert to fraction form
    72,248.34/99,700.40 = 40,416.56/x
  3. Step 3: Cross multiply
    72,248.34x = 99,700.40 × 40,416.56
  4. Step 4: Simplify right side
    72,248.34x = 4,029,546,848.33
  5. Step 5: Solve for x
    x = 4,029,546,848.33/72,248.34
  6. Step 6: Final answer
    x = 55,773.55

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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.