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Finding the Fourth Proportional to 65,716.80, 98,575.20 and 49,970.40

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Solution

The fourth proportional to 65,716.80, 98,575.20 and 49,970.40 is: 74,955.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,716.80 : 98,575.20 = 49,970.40 : x
  2. Step 2: Convert to fraction form
    65,716.80/98,575.20 = 49,970.40/x
  3. Step 3: Cross multiply
    65,716.80x = 98,575.20 × 49,970.40
  4. Step 4: Simplify right side
    65,716.80x = 4,925,842,174.08
  5. Step 5: Solve for x
    x = 4,925,842,174.08/65,716.80
  6. Step 6: Final answer
    x = 74,955.60

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1.5x scale

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.