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Finding the Fourth Proportional to 92,810.32, 139,232.80 and 42,212.96

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Solution

The fourth proportional to 92,810.32, 139,232.80 and 42,212.96 is: 63,327.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,810.32 : 139,232.80 = 42,212.96 : x
  2. Step 2: Convert to fraction form
    92,810.32/139,232.80 = 42,212.96/x
  3. Step 3: Cross multiply
    92,810.32x = 139,232.80 × 42,212.96
  4. Step 4: Simplify right side
    92,810.32x = 5,877,428,617.09
  5. Step 5: Solve for x
    x = 5,877,428,617.09/92,810.32
  6. Step 6: Final answer
    x = 63,327.32

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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.