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Finding the Fourth Proportional to 98,017.50, 135,264.16 and 53,305.50

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Solution

The fourth proportional to 98,017.50, 135,264.16 and 53,305.50 is: 73,561.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,017.50 : 135,264.16 = 53,305.50 : x
  2. Step 2: Convert to fraction form
    98,017.50/135,264.16 = 53,305.50/x
  3. Step 3: Cross multiply
    98,017.50x = 135,264.16 × 53,305.50
  4. Step 4: Simplify right side
    98,017.50x = 7,210,323,680.88
  5. Step 5: Solve for x
    x = 7,210,323,680.88/98,017.50
  6. Step 6: Final answer
    x = 73,561.60

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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.