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Finding the Fourth Proportional to 98,402.30, 135,783.96 and 55,373.48

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Solution

The fourth proportional to 98,402.30, 135,783.96 and 55,373.48 is: 76,409.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,402.30 : 135,783.96 = 55,373.48 : x
  2. Step 2: Convert to fraction form
    98,402.30/135,783.96 = 55,373.48/x
  3. Step 3: Cross multiply
    98,402.30x = 135,783.96 × 55,373.48
  4. Step 4: Simplify right side
    98,402.30x = 7,518,830,393.38
  5. Step 5: Solve for x
    x = 7,518,830,393.38/98,402.30
  6. Step 6: Final answer
    x = 76,409.09

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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.