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Finding the Fourth Proportional to 101,850.90, 140,547.67 and 56,528.90

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Solution

The fourth proportional to 101,850.90, 140,547.67 and 56,528.90 is: 78,006.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,850.90 : 140,547.67 = 56,528.90 : x
  2. Step 2: Convert to fraction form
    101,850.90/140,547.67 = 56,528.90/x
  3. Step 3: Cross multiply
    101,850.90x = 140,547.67 × 56,528.90
  4. Step 4: Simplify right side
    101,850.90x = 7,945,005,182.66
  5. Step 5: Solve for x
    x = 7,945,005,182.66/101,850.90
  6. Step 6: Final answer
    x = 78,006.23

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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.