Home / 78,576.93-108,436.17-42,767.21

Finding the Fourth Proportional to 78,576.93, 108,436.17 and 42,767.21

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Solution

The fourth proportional to 78,576.93, 108,436.17 and 42,767.21 is: 59,018.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,576.93 : 108,436.17 = 42,767.21 : x
  2. Step 2: Convert to fraction form
    78,576.93/108,436.17 = 42,767.21/x
  3. Step 3: Cross multiply
    78,576.93x = 108,436.17 × 42,767.21
  4. Step 4: Simplify right side
    78,576.93x = 4,637,512,453.99
  5. Step 5: Solve for x
    x = 4,637,512,453.99/78,576.93
  6. Step 6: Final answer
    x = 59,018.75

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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.