Home / 56,485.98-77,948.02-30,991.77

Finding the Fourth Proportional to 56,485.98, 77,948.02 and 30,991.77

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Solution

The fourth proportional to 56,485.98, 77,948.02 and 30,991.77 is: 42,767.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,485.98 : 77,948.02 = 30,991.77 : x
  2. Step 2: Convert to fraction form
    56,485.98/77,948.02 = 30,991.77/x
  3. Step 3: Cross multiply
    56,485.98x = 77,948.02 × 30,991.77
  4. Step 4: Simplify right side
    56,485.98x = 2,415,747,146.54
  5. Step 5: Solve for x
    x = 2,415,747,146.54/56,485.98
  6. Step 6: Final answer
    x = 42,767.20

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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.