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Finding the Fourth Proportional to 66,462.62, 91,666.55 and 42,591.51

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Solution

The fourth proportional to 66,462.62, 91,666.55 and 42,591.51 is: 58,743.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,462.62 : 91,666.55 = 42,591.51 : x
  2. Step 2: Convert to fraction form
    66,462.62/91,666.55 = 42,591.51/x
  3. Step 3: Cross multiply
    66,462.62x = 91,666.55 × 42,591.51
  4. Step 4: Simplify right side
    66,462.62x = 3,904,216,887.47
  5. Step 5: Solve for x
    x = 3,904,216,887.47/66,462.62
  6. Step 6: Final answer
    x = 58,743.05

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1.5x scale

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.