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Finding the Fourth Proportional to 56,547.80, 84,821.70 and 28,899.80

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Solution

The fourth proportional to 56,547.80, 84,821.70 and 28,899.80 is: 43,349.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,547.80 : 84,821.70 = 28,899.80 : x
  2. Step 2: Convert to fraction form
    56,547.80/84,821.70 = 28,899.80/x
  3. Step 3: Cross multiply
    56,547.80x = 84,821.70 × 28,899.80
  4. Step 4: Simplify right side
    56,547.80x = 2,451,330,165.66
  5. Step 5: Solve for x
    x = 2,451,330,165.66/56,547.80
  6. Step 6: Final answer
    x = 43,349.70

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.