Home / 56,478.73-77,941.22-30,985.13

Finding the Fourth Proportional to 56,478.73, 77,941.22 and 30,985.13

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Solution

The fourth proportional to 56,478.73, 77,941.22 and 30,985.13 is: 42,759.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,478.73 : 77,941.22 = 30,985.13 : x
  2. Step 2: Convert to fraction form
    56,478.73/77,941.22 = 30,985.13/x
  3. Step 3: Cross multiply
    56,478.73x = 77,941.22 × 30,985.13
  4. Step 4: Simplify right side
    56,478.73x = 2,415,018,834.06
  5. Step 5: Solve for x
    x = 2,415,018,834.06/56,478.73
  6. Step 6: Final answer
    x = 42,759.79

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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.