Home / 55,657.47-76,809.27-39,779.85

Finding the Fourth Proportional to 55,657.47, 76,809.27 and 39,779.85

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Solution

The fourth proportional to 55,657.47, 76,809.27 and 39,779.85 is: 54,897.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,657.47 : 76,809.27 = 39,779.85 : x
  2. Step 2: Convert to fraction form
    55,657.47/76,809.27 = 39,779.85/x
  3. Step 3: Cross multiply
    55,657.47x = 76,809.27 × 39,779.85
  4. Step 4: Simplify right side
    55,657.47x = 3,055,461,239.21
  5. Step 5: Solve for x
    x = 3,055,461,239.21/55,657.47
  6. Step 6: Final answer
    x = 54,897.59

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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.