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Finding the Fourth Proportional to 65,009.40, 91,275.60 and 65,009.40

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Solution

The fourth proportional to 65,009.40, 91,275.60 and 65,009.40 is: 91,275.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,009.40 : 91,275.60 = 65,009.40 : x
  2. Step 2: Convert to fraction form
    65,009.40/91,275.60 = 65,009.40/x
  3. Step 3: Cross multiply
    65,009.40x = 91,275.60 × 65,009.40
  4. Step 4: Simplify right side
    65,009.40x = 5,933,771,990.64
  5. Step 5: Solve for x
    x = 5,933,771,990.64/65,009.40
  6. Step 6: Final answer
    x = 91,275.60

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.