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Finding the Fourth Proportional to 98,842.47, 136,402.66 and 53,520.47

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Solution

The fourth proportional to 98,842.47, 136,402.66 and 53,520.47 is: 73,858.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,842.47 : 136,402.66 = 53,520.47 : x
  2. Step 2: Convert to fraction form
    98,842.47/136,402.66 = 53,520.47/x
  3. Step 3: Cross multiply
    98,842.47x = 136,402.66 × 53,520.47
  4. Step 4: Simplify right side
    98,842.47x = 7,300,334,168.15
  5. Step 5: Solve for x
    x = 7,300,334,168.15/98,842.47
  6. Step 6: Final answer
    x = 73,858.28

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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.