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Finding the Fourth Proportional to 83,779.96, 115,615.77 and 45,538.55

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Solution

The fourth proportional to 83,779.96, 115,615.77 and 45,538.55 is: 62,842.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,779.96 : 115,615.77 = 45,538.55 : x
  2. Step 2: Convert to fraction form
    83,779.96/115,615.77 = 45,538.55/x
  3. Step 3: Cross multiply
    83,779.96x = 115,615.77 × 45,538.55
  4. Step 4: Simplify right side
    83,779.96x = 5,264,974,522.93
  5. Step 5: Solve for x
    x = 5,264,974,522.93/83,779.96
  6. Step 6: Final answer
    x = 62,842.89

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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.