Home / 55,809.68-77,013.40-31,603.72

Finding the Fourth Proportional to 55,809.68, 77,013.40 and 31,603.72

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Solution

The fourth proportional to 55,809.68, 77,013.40 and 31,603.72 is: 43,610.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,809.68 : 77,013.40 = 31,603.72 : x
  2. Step 2: Convert to fraction form
    55,809.68/77,013.40 = 31,603.72/x
  3. Step 3: Cross multiply
    55,809.68x = 77,013.40 × 31,603.72
  4. Step 4: Simplify right side
    55,809.68x = 2,433,909,929.85
  5. Step 5: Solve for x
    x = 2,433,909,929.85/55,809.68
  6. Step 6: Final answer
    x = 43,610.89

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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.