Home / 56,506.43-77,981.69-31,012.57

Finding the Fourth Proportional to 56,506.43, 77,981.69 and 31,012.57

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Solution

The fourth proportional to 56,506.43, 77,981.69 and 31,012.57 is: 42,798.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,506.43 : 77,981.69 = 31,012.57 : x
  2. Step 2: Convert to fraction form
    56,506.43/77,981.69 = 31,012.57/x
  3. Step 3: Cross multiply
    56,506.43x = 77,981.69 × 31,012.57
  4. Step 4: Simplify right side
    56,506.43x = 2,418,412,619.84
  5. Step 5: Solve for x
    x = 2,418,412,619.84/56,506.43
  6. Step 6: Final answer
    x = 42,798.89

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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.