Home / 56,029.10-77,320.16-30,878.60

Finding the Fourth Proportional to 56,029.10, 77,320.16 and 30,878.60

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Solution

The fourth proportional to 56,029.10, 77,320.16 and 30,878.60 is: 42,612.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,029.10 : 77,320.16 = 30,878.60 : x
  2. Step 2: Convert to fraction form
    56,029.10/77,320.16 = 30,878.60/x
  3. Step 3: Cross multiply
    56,029.10x = 77,320.16 × 30,878.60
  4. Step 4: Simplify right side
    56,029.10x = 2,387,538,563.07
  5. Step 5: Solve for x
    x = 2,387,538,563.07/56,029.10
  6. Step 6: Final answer
    x = 42,612.47

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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.