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Finding the Fourth Proportional to 44,775.10, 61,779 and 28,840.78

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Solution

The fourth proportional to 44,775.10, 61,779 and 28,840.78 is: 39,793.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,775.10 : 61,779 = 28,840.78 : x
  2. Step 2: Convert to fraction form
    44,775.10/61,779 = 28,840.78/x
  3. Step 3: Cross multiply
    44,775.10x = 61,779 × 28,840.78
  4. Step 4: Simplify right side
    44,775.10x = 1,781,754,547.62
  5. Step 5: Solve for x
    x = 1,781,754,547.62/44,775.10
  6. Step 6: Final answer
    x = 39,793.42

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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.