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Finding the Fourth Proportional to 56,130.90, 77,458.71 and 33,458.21

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Solution

The fourth proportional to 56,130.90, 77,458.71 and 33,458.21 is: 46,171.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,130.90 : 77,458.71 = 33,458.21 : x
  2. Step 2: Convert to fraction form
    56,130.90/77,458.71 = 33,458.21/x
  3. Step 3: Cross multiply
    56,130.90x = 77,458.71 × 33,458.21
  4. Step 4: Simplify right side
    56,130.90x = 2,591,629,398.22
  5. Step 5: Solve for x
    x = 2,591,629,398.22/56,130.90
  6. Step 6: Final answer
    x = 46,171.17

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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.