Home / 55,931.47-77,185.43-30,780.97

Finding the Fourth Proportional to 55,931.47, 77,185.43 and 30,780.97

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Solution

The fourth proportional to 55,931.47, 77,185.43 and 30,780.97 is: 42,477.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,931.47 : 77,185.43 = 30,780.97 : x
  2. Step 2: Convert to fraction form
    55,931.47/77,185.43 = 30,780.97/x
  3. Step 3: Cross multiply
    55,931.47x = 77,185.43 × 30,780.97
  4. Step 4: Simplify right side
    55,931.47x = 2,375,842,289.26
  5. Step 5: Solve for x
    x = 2,375,842,289.26/55,931.47
  6. Step 6: Final answer
    x = 42,477.74

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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.