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Finding the Fourth Proportional to 91,592.87, 126,398.12 and 55,782.88

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Solution

The fourth proportional to 91,592.87, 126,398.12 and 55,782.88 is: 76,980.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,592.87 : 126,398.12 = 55,782.88 : x
  2. Step 2: Convert to fraction form
    91,592.87/126,398.12 = 55,782.88/x
  3. Step 3: Cross multiply
    91,592.87x = 126,398.12 × 55,782.88
  4. Step 4: Simplify right side
    91,592.87x = 7,050,851,278.99
  5. Step 5: Solve for x
    x = 7,050,851,278.99/91,592.87
  6. Step 6: Final answer
    x = 76,980.35

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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.