Home / 56,012.12-77,298.16-30,861.64

Finding the Fourth Proportional to 56,012.12, 77,298.16 and 30,861.64

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Solution

The fourth proportional to 56,012.12, 77,298.16 and 30,861.64 is: 42,589.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,012.12 : 77,298.16 = 30,861.64 : x
  2. Step 2: Convert to fraction form
    56,012.12/77,298.16 = 30,861.64/x
  3. Step 3: Cross multiply
    56,012.12x = 77,298.16 × 30,861.64
  4. Step 4: Simplify right side
    56,012.12x = 2,385,547,986.58
  5. Step 5: Solve for x
    x = 2,385,547,986.58/56,012.12
  6. Step 6: Final answer
    x = 42,589.85

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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.