Home / 90,977.28-125,575.68-57,465.60

Finding the Fourth Proportional to 90,977.28, 125,575.68 and 57,465.60

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Solution

The fourth proportional to 90,977.28, 125,575.68 and 57,465.60 is: 79,319.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,977.28 : 125,575.68 = 57,465.60 : x
  2. Step 2: Convert to fraction form
    90,977.28/125,575.68 = 57,465.60/x
  3. Step 3: Cross multiply
    90,977.28x = 125,575.68 × 57,465.60
  4. Step 4: Simplify right side
    90,977.28x = 7,216,281,796.61
  5. Step 5: Solve for x
    x = 7,216,281,796.61/90,977.28
  6. Step 6: Final answer
    x = 79,319.60

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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.