Home / 78,576.17-108,437.78-42,767.48

Finding the Fourth Proportional to 78,576.17, 108,437.78 and 42,767.48

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Solution

The fourth proportional to 78,576.17, 108,437.78 and 42,767.48 is: 59,020.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,576.17 : 108,437.78 = 42,767.48 : x
  2. Step 2: Convert to fraction form
    78,576.17/108,437.78 = 42,767.48/x
  3. Step 3: Cross multiply
    78,576.17x = 108,437.78 × 42,767.48
  4. Step 4: Simplify right side
    78,576.17x = 4,637,610,373.56
  5. Step 5: Solve for x
    x = 4,637,610,373.56/78,576.17
  6. Step 6: Final answer
    x = 59,020.57

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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.