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Finding the Fourth Proportional to 55,925.90, 77,177.70 and 30,775.40

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Solution

The fourth proportional to 55,925.90, 77,177.70 and 30,775.40 is: 42,470.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,925.90 : 77,177.70 = 30,775.40 : x
  2. Step 2: Convert to fraction form
    55,925.90/77,177.70 = 30,775.40/x
  3. Step 3: Cross multiply
    55,925.90x = 77,177.70 × 30,775.40
  4. Step 4: Simplify right side
    55,925.90x = 2,375,174,588.58
  5. Step 5: Solve for x
    x = 2,375,174,588.58/55,925.90
  6. Step 6: Final answer
    x = 42,470.03

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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.