Home / 77,953.10-107,575.22-42,143.12

Finding the Fourth Proportional to 77,953.10, 107,575.22 and 42,143.12

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Solution

The fourth proportional to 77,953.10, 107,575.22 and 42,143.12 is: 58,157.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,953.10 : 107,575.22 = 42,143.12 : x
  2. Step 2: Convert to fraction form
    77,953.10/107,575.22 = 42,143.12/x
  3. Step 3: Cross multiply
    77,953.10x = 107,575.22 × 42,143.12
  4. Step 4: Simplify right side
    77,953.10x = 4,533,555,405.49
  5. Step 5: Solve for x
    x = 4,533,555,405.49/77,953.10
  6. Step 6: Final answer
    x = 58,157.47

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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.