Home / 56,491.89-77,960.25-30,999.35

Finding the Fourth Proportional to 56,491.89, 77,960.25 and 30,999.35

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Solution

The fourth proportional to 56,491.89, 77,960.25 and 30,999.35 is: 42,779.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,491.89 : 77,960.25 = 30,999.35 : x
  2. Step 2: Convert to fraction form
    56,491.89/77,960.25 = 30,999.35/x
  3. Step 3: Cross multiply
    56,491.89x = 77,960.25 × 30,999.35
  4. Step 4: Simplify right side
    56,491.89x = 2,416,716,686.04
  5. Step 5: Solve for x
    x = 2,416,716,686.04/56,491.89
  6. Step 6: Final answer
    x = 42,779.89

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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.