Home / 77,011.16-115,516.66-28,988.73

Finding the Fourth Proportional to 77,011.16, 115,516.66 and 28,988.73

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Solution

The fourth proportional to 77,011.16, 115,516.66 and 28,988.73 is: 43,483.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,011.16 : 115,516.66 = 28,988.73 : x
  2. Step 2: Convert to fraction form
    77,011.16/115,516.66 = 28,988.73/x
  3. Step 3: Cross multiply
    77,011.16x = 115,516.66 × 28,988.73
  4. Step 4: Simplify right side
    77,011.16x = 3,348,681,267.24
  5. Step 5: Solve for x
    x = 3,348,681,267.24/77,011.16
  6. Step 6: Final answer
    x = 43,483.06

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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.