Home / 66,458.07-91,685.12-42,598.71

Finding the Fourth Proportional to 66,458.07, 91,685.12 and 42,598.71

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Solution

The fourth proportional to 66,458.07, 91,685.12 and 42,598.71 is: 58,768.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,458.07 : 91,685.12 = 42,598.71 : x
  2. Step 2: Convert to fraction form
    66,458.07/91,685.12 = 42,598.71/x
  3. Step 3: Cross multiply
    66,458.07x = 91,685.12 × 42,598.71
  4. Step 4: Simplify right side
    66,458.07x = 3,905,667,625.20
  5. Step 5: Solve for x
    x = 3,905,667,625.20/66,458.07
  6. Step 6: Final answer
    x = 58,768.90

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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.