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Finding the Fourth Proportional to 56,057.88, 77,359.56 and 30,907.40

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Solution

The fourth proportional to 56,057.88, 77,359.56 and 30,907.40 is: 42,652.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,057.88 : 77,359.56 = 30,907.40 : x
  2. Step 2: Convert to fraction form
    56,057.88/77,359.56 = 30,907.40/x
  3. Step 3: Cross multiply
    56,057.88x = 77,359.56 × 30,907.40
  4. Step 4: Simplify right side
    56,057.88x = 2,390,982,864.74
  5. Step 5: Solve for x
    x = 2,390,982,864.74/56,057.88
  6. Step 6: Final answer
    x = 42,652.04

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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.