Home / 56,128.42-77,457.66-30,634.98

Finding the Fourth Proportional to 56,128.42, 77,457.66 and 30,634.98

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Solution

The fourth proportional to 56,128.42, 77,457.66 and 30,634.98 is: 42,276.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,128.42 : 77,457.66 = 30,634.98 : x
  2. Step 2: Convert to fraction form
    56,128.42/77,457.66 = 30,634.98/x
  3. Step 3: Cross multiply
    56,128.42x = 77,457.66 × 30,634.98
  4. Step 4: Simplify right side
    56,128.42x = 2,372,913,864.95
  5. Step 5: Solve for x
    x = 2,372,913,864.95/56,128.42
  6. Step 6: Final answer
    x = 42,276.51

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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.