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Finding the Fourth Proportional to 115,810.56, 173,750.40 and 66,528

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Solution

The fourth proportional to 115,810.56, 173,750.40 and 66,528 is: 99,811.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,810.56 : 173,750.40 = 66,528 : x
  2. Step 2: Convert to fraction form
    115,810.56/173,750.40 = 66,528/x
  3. Step 3: Cross multiply
    115,810.56x = 173,750.40 × 66,528
  4. Step 4: Simplify right side
    115,810.56x = 11,559,266,611.20
  5. Step 5: Solve for x
    x = 11,559,266,611.20/115,810.56
  6. Step 6: Final answer
    x = 99,811.85

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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.