Home / 85,130.48-117,426.81-61,219.28

Finding the Fourth Proportional to 85,130.48, 117,426.81 and 61,219.28

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Solution

The fourth proportional to 85,130.48, 117,426.81 and 61,219.28 is: 84,444.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,130.48 : 117,426.81 = 61,219.28 : x
  2. Step 2: Convert to fraction form
    85,130.48/117,426.81 = 61,219.28/x
  3. Step 3: Cross multiply
    85,130.48x = 117,426.81 × 61,219.28
  4. Step 4: Simplify right side
    85,130.48x = 7,188,784,760.90
  5. Step 5: Solve for x
    x = 7,188,784,760.90/85,130.48
  6. Step 6: Final answer
    x = 84,444.31

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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.