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Finding the Fourth Proportional to 42,036.87, 57,978.07 and 26,930.93

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Solution

The fourth proportional to 42,036.87, 57,978.07 and 26,930.93 is: 37,143.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,036.87 : 57,978.07 = 26,930.93 : x
  2. Step 2: Convert to fraction form
    42,036.87/57,978.07 = 26,930.93/x
  3. Step 3: Cross multiply
    42,036.87x = 57,978.07 × 26,930.93
  4. Step 4: Simplify right side
    42,036.87x = 1,561,403,275.74
  5. Step 5: Solve for x
    x = 1,561,403,275.74/42,036.87
  6. Step 6: Final answer
    x = 37,143.66

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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.