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Finding the Fourth Proportional to 80,761.78, 111,457.29 and 46,779.40

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Solution

The fourth proportional to 80,761.78, 111,457.29 and 46,779.40 is: 64,559.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,761.78 : 111,457.29 = 46,779.40 : x
  2. Step 2: Convert to fraction form
    80,761.78/111,457.29 = 46,779.40/x
  3. Step 3: Cross multiply
    80,761.78x = 111,457.29 × 46,779.40
  4. Step 4: Simplify right side
    80,761.78x = 5,213,905,151.83
  5. Step 5: Solve for x
    x = 5,213,905,151.83/80,761.78
  6. Step 6: Final answer
    x = 64,559.07

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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.