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Finding the Fourth Proportional to 63,390, 87,478.20 and 35,097.51

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Solution

The fourth proportional to 63,390, 87,478.20 and 35,097.51 is: 48,434.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,390 : 87,478.20 = 35,097.51 : x
  2. Step 2: Convert to fraction form
    63,390/87,478.20 = 35,097.51/x
  3. Step 3: Cross multiply
    63,390x = 87,478.20 × 35,097.51
  4. Step 4: Simplify right side
    63,390x = 3,070,266,999.28
  5. Step 5: Solve for x
    x = 3,070,266,999.28/63,390
  6. Step 6: Final answer
    x = 48,434.56

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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.