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Finding the Fourth Proportional to 112,851, 155,734.40 and 62,550

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Solution

The fourth proportional to 112,851, 155,734.40 and 62,550 is: 86,319.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,851 : 155,734.40 = 62,550 : x
  2. Step 2: Convert to fraction form
    112,851/155,734.40 = 62,550/x
  3. Step 3: Cross multiply
    112,851x = 155,734.40 × 62,550
  4. Step 4: Simplify right side
    112,851x = 9,741,186,720
  5. Step 5: Solve for x
    x = 9,741,186,720/112,851
  6. Step 6: Final answer
    x = 86,319.01

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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.