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Finding the Fourth Proportional to 74,365.55, 102,624.13 and 40,373.76

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Solution

The fourth proportional to 74,365.55, 102,624.13 and 40,373.76 is: 55,715.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,365.55 : 102,624.13 = 40,373.76 : x
  2. Step 2: Convert to fraction form
    74,365.55/102,624.13 = 40,373.76/x
  3. Step 3: Cross multiply
    74,365.55x = 102,624.13 × 40,373.76
  4. Step 4: Simplify right side
    74,365.55x = 4,143,321,994.83
  5. Step 5: Solve for x
    x = 4,143,321,994.83/74,365.55
  6. Step 6: Final answer
    x = 55,715.61

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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.