Home / 74,430.81-102,712.68-40,438.50

Finding the Fourth Proportional to 74,430.81, 102,712.68 and 40,438.50

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Solution

The fourth proportional to 74,430.81, 102,712.68 and 40,438.50 is: 55,804.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,430.81 : 102,712.68 = 40,438.50 : x
  2. Step 2: Convert to fraction form
    74,430.81/102,712.68 = 40,438.50/x
  3. Step 3: Cross multiply
    74,430.81x = 102,712.68 × 40,438.50
  4. Step 4: Simplify right side
    74,430.81x = 4,153,546,710.18
  5. Step 5: Solve for x
    x = 4,153,546,710.18/74,430.81
  6. Step 6: Final answer
    x = 55,804.13

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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.