Home / 98,538.40-135,983.16-53,826.40

Finding the Fourth Proportional to 98,538.40, 135,983.16 and 53,826.40

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Solution

The fourth proportional to 98,538.40, 135,983.16 and 53,826.40 is: 74,280.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,538.40 : 135,983.16 = 53,826.40 : x
  2. Step 2: Convert to fraction form
    98,538.40/135,983.16 = 53,826.40/x
  3. Step 3: Cross multiply
    98,538.40x = 135,983.16 × 53,826.40
  4. Step 4: Simplify right side
    98,538.40x = 7,319,483,963.42
  5. Step 5: Solve for x
    x = 7,319,483,963.42/98,538.40
  6. Step 6: Final answer
    x = 74,280.52

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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.