Home / 91,989.64-138,037.65-38,677.42

Finding the Fourth Proportional to 91,989.64, 138,037.65 and 38,677.42

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Solution

The fourth proportional to 91,989.64, 138,037.65 and 38,677.42 is: 58,038.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,989.64 : 138,037.65 = 38,677.42 : x
  2. Step 2: Convert to fraction form
    91,989.64/138,037.65 = 38,677.42/x
  3. Step 3: Cross multiply
    91,989.64x = 138,037.65 × 38,677.42
  4. Step 4: Simplify right side
    91,989.64x = 5,338,940,164.86
  5. Step 5: Solve for x
    x = 5,338,940,164.86/91,989.64
  6. Step 6: Final answer
    x = 58,038.49

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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.