Home / 74,365.12-102,624-40,373.60

Finding the Fourth Proportional to 74,365.12, 102,624 and 40,373.60

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Solution

The fourth proportional to 74,365.12, 102,624 and 40,373.60 is: 55,715.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,365.12 : 102,624 = 40,373.60 : x
  2. Step 2: Convert to fraction form
    74,365.12/102,624 = 40,373.60/x
  3. Step 3: Cross multiply
    74,365.12x = 102,624 × 40,373.60
  4. Step 4: Simplify right side
    74,365.12x = 4,143,300,326.40
  5. Step 5: Solve for x
    x = 4,143,300,326.40/74,365.12
  6. Step 6: Final answer
    x = 55,715.64

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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.