Home / 78,437.07-108,238.68-42,626.79

Finding the Fourth Proportional to 78,437.07, 108,238.68 and 42,626.79

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Solution

The fourth proportional to 78,437.07, 108,238.68 and 42,626.79 is: 58,822.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,437.07 : 108,238.68 = 42,626.79 : x
  2. Step 2: Convert to fraction form
    78,437.07/108,238.68 = 42,626.79/x
  3. Step 3: Cross multiply
    78,437.07x = 108,238.68 × 42,626.79
  4. Step 4: Simplify right side
    78,437.07x = 4,613,867,482.24
  5. Step 5: Solve for x
    x = 4,613,867,482.24/78,437.07
  6. Step 6: Final answer
    x = 58,822.54

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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.