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Finding the Fourth Proportional to 75,159.54, 103,484.12 and 63,805.50

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Solution

The fourth proportional to 75,159.54, 103,484.12 and 63,805.50 is: 87,851.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,159.54 : 103,484.12 = 63,805.50 : x
  2. Step 2: Convert to fraction form
    75,159.54/103,484.12 = 63,805.50/x
  3. Step 3: Cross multiply
    75,159.54x = 103,484.12 × 63,805.50
  4. Step 4: Simplify right side
    75,159.54x = 6,602,855,699.63
  5. Step 5: Solve for x
    x = 6,602,855,699.63/75,159.54
  6. Step 6: Final answer
    x = 87,851.20

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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.