Home / 56,029.84-77,320.16-30,536.40

Finding the Fourth Proportional to 56,029.84, 77,320.16 and 30,536.40

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Solution

The fourth proportional to 56,029.84, 77,320.16 and 30,536.40 is: 42,139.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,029.84 : 77,320.16 = 30,536.40 : x
  2. Step 2: Convert to fraction form
    56,029.84/77,320.16 = 30,536.40/x
  3. Step 3: Cross multiply
    56,029.84x = 77,320.16 × 30,536.40
  4. Step 4: Simplify right side
    56,029.84x = 2,361,079,333.82
  5. Step 5: Solve for x
    x = 2,361,079,333.82/56,029.84
  6. Step 6: Final answer
    x = 42,139.68

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.