Home / 103,606.32-155,386.35-40,428.12

Finding the Fourth Proportional to 103,606.32, 155,386.35 and 40,428.12

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Solution

The fourth proportional to 103,606.32, 155,386.35 and 40,428.12 is: 60,633.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,606.32 : 155,386.35 = 40,428.12 : x
  2. Step 2: Convert to fraction form
    103,606.32/155,386.35 = 40,428.12/x
  3. Step 3: Cross multiply
    103,606.32x = 155,386.35 × 40,428.12
  4. Step 4: Simplify right side
    103,606.32x = 6,281,978,004.16
  5. Step 5: Solve for x
    x = 6,281,978,004.16/103,606.32
  6. Step 6: Final answer
    x = 60,633.15

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.