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Finding the Fourth Proportional to 101,748, 140,420.88 and 57,044.64

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Solution

The fourth proportional to 101,748, 140,420.88 and 57,044.64 is: 78,726.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,748 : 140,420.88 = 57,044.64 : x
  2. Step 2: Convert to fraction form
    101,748/140,420.88 = 57,044.64/x
  3. Step 3: Cross multiply
    101,748x = 140,420.88 × 57,044.64
  4. Step 4: Simplify right side
    101,748x = 8,010,258,548.08
  5. Step 5: Solve for x
    x = 8,010,258,548.08/101,748
  6. Step 6: Final answer
    x = 78,726.45

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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.