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Finding the Fourth Proportional to 98,017.72, 135,264.54 and 53,305.72

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Solution

The fourth proportional to 98,017.72, 135,264.54 and 53,305.72 is: 73,561.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,017.72 : 135,264.54 = 53,305.72 : x
  2. Step 2: Convert to fraction form
    98,017.72/135,264.54 = 53,305.72/x
  3. Step 3: Cross multiply
    98,017.72x = 135,264.54 × 53,305.72
  4. Step 4: Simplify right side
    98,017.72x = 7,210,373,695.17
  5. Step 5: Solve for x
    x = 7,210,373,695.17/98,017.72
  6. Step 6: Final answer
    x = 73,561.94

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1.5x scale

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.