Home / 66,345.57-99,618.12-57,086.46

Finding the Fourth Proportional to 66,345.57, 99,618.12 and 57,086.46

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Solution

The fourth proportional to 66,345.57, 99,618.12 and 57,086.46 is: 85,715.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,345.57 : 99,618.12 = 57,086.46 : x
  2. Step 2: Convert to fraction form
    66,345.57/99,618.12 = 57,086.46/x
  3. Step 3: Cross multiply
    66,345.57x = 99,618.12 × 57,086.46
  4. Step 4: Simplify right side
    66,345.57x = 5,686,845,822.66
  5. Step 5: Solve for x
    x = 5,686,845,822.66/66,345.57
  6. Step 6: Final answer
    x = 85,715.53

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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.