Home / 56,428.48-77,871.10-30,935

Finding the Fourth Proportional to 56,428.48, 77,871.10 and 30,935

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Solution

The fourth proportional to 56,428.48, 77,871.10 and 30,935 is: 42,690.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,428.48 : 77,871.10 = 30,935 : x
  2. Step 2: Convert to fraction form
    56,428.48/77,871.10 = 30,935/x
  3. Step 3: Cross multiply
    56,428.48x = 77,871.10 × 30,935
  4. Step 4: Simplify right side
    56,428.48x = 2,408,942,478.50
  5. Step 5: Solve for x
    x = 2,408,942,478.50/56,428.48
  6. Step 6: Final answer
    x = 42,690.19

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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.