Home / 77,081.32-115,613.34-21,681.64

Finding the Fourth Proportional to 77,081.32, 115,613.34 and 21,681.64

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Solution

The fourth proportional to 77,081.32, 115,613.34 and 21,681.64 is: 32,520.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,081.32 : 115,613.34 = 21,681.64 : x
  2. Step 2: Convert to fraction form
    77,081.32/115,613.34 = 21,681.64/x
  3. Step 3: Cross multiply
    77,081.32x = 115,613.34 × 21,681.64
  4. Step 4: Simplify right side
    77,081.32x = 2,506,686,817.08
  5. Step 5: Solve for x
    x = 2,506,686,817.08/77,081.32
  6. Step 6: Final answer
    x = 32,520.03

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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.