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Finding the Fourth Proportional to 101,670.52, 140,315.12 and 56,358.32

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Solution

The fourth proportional to 101,670.52, 140,315.12 and 56,358.32 is: 77,779.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,670.52 : 140,315.12 = 56,358.32 : x
  2. Step 2: Convert to fraction form
    101,670.52/140,315.12 = 56,358.32/x
  3. Step 3: Cross multiply
    101,670.52x = 140,315.12 × 56,358.32
  4. Step 4: Simplify right side
    101,670.52x = 7,907,924,433.80
  5. Step 5: Solve for x
    x = 7,907,924,433.80/101,670.52
  6. Step 6: Final answer
    x = 77,779.92

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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.