Home / 77,925.76-107,537.57-42,115.77

Finding the Fourth Proportional to 77,925.76, 107,537.57 and 42,115.77

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Solution

The fourth proportional to 77,925.76, 107,537.57 and 42,115.77 is: 58,119.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,925.76 : 107,537.57 = 42,115.77 : x
  2. Step 2: Convert to fraction form
    77,925.76/107,537.57 = 42,115.77/x
  3. Step 3: Cross multiply
    77,925.76x = 107,537.57 × 42,115.77
  4. Step 4: Simplify right side
    77,925.76x = 4,529,027,207.66
  5. Step 5: Solve for x
    x = 4,529,027,207.66/77,925.76
  6. Step 6: Final answer
    x = 58,119.77

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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.