Home / 47,688.75-65,810.48-28,825.88

Finding the Fourth Proportional to 47,688.75, 65,810.48 and 28,825.88

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Solution

The fourth proportional to 47,688.75, 65,810.48 and 28,825.88 is: 39,779.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,688.75 : 65,810.48 = 28,825.88 : x
  2. Step 2: Convert to fraction form
    47,688.75/65,810.48 = 28,825.88/x
  3. Step 3: Cross multiply
    47,688.75x = 65,810.48 × 28,825.88
  4. Step 4: Simplify right side
    47,688.75x = 1,897,044,526.04
  5. Step 5: Solve for x
    x = 1,897,044,526.04/47,688.75
  6. Step 6: Final answer
    x = 39,779.71

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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.