Home / 65,789.28-99,047.88-45,148.32

Finding the Fourth Proportional to 65,789.28, 99,047.88 and 45,148.32

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Solution

The fourth proportional to 65,789.28, 99,047.88 and 45,148.32 is: 67,972.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,789.28 : 99,047.88 = 45,148.32 : x
  2. Step 2: Convert to fraction form
    65,789.28/99,047.88 = 45,148.32/x
  3. Step 3: Cross multiply
    65,789.28x = 99,047.88 × 45,148.32
  4. Step 4: Simplify right side
    65,789.28x = 4,471,845,381.56
  5. Step 5: Solve for x
    x = 4,471,845,381.56/65,789.28
  6. Step 6: Final answer
    x = 67,972.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.