Home / 81,777.43-112,836.29-47,779.35

Finding the Fourth Proportional to 81,777.43, 112,836.29 and 47,779.35

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Solution

The fourth proportional to 81,777.43, 112,836.29 and 47,779.35 is: 65,925.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,777.43 : 112,836.29 = 47,779.35 : x
  2. Step 2: Convert to fraction form
    81,777.43/112,836.29 = 47,779.35/x
  3. Step 3: Cross multiply
    81,777.43x = 112,836.29 × 47,779.35
  4. Step 4: Simplify right side
    81,777.43x = 5,391,244,592.61
  5. Step 5: Solve for x
    x = 5,391,244,592.61/81,777.43
  6. Step 6: Final answer
    x = 65,925.83

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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.