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Finding the Fourth Proportional to 92,646.90, 139,156.30 and 55,279.88

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Solution

The fourth proportional to 92,646.90, 139,156.30 and 55,279.88 is: 83,030.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,646.90 : 139,156.30 = 55,279.88 : x
  2. Step 2: Convert to fraction form
    92,646.90/139,156.30 = 55,279.88/x
  3. Step 3: Cross multiply
    92,646.90x = 139,156.30 × 55,279.88
  4. Step 4: Simplify right side
    92,646.90x = 7,692,543,565.24
  5. Step 5: Solve for x
    x = 7,692,543,565.24/92,646.90
  6. Step 6: Final answer
    x = 83,030.77

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.