Home / 56,171.12-77,516.12-31,020.40

Finding the Fourth Proportional to 56,171.12, 77,516.12 and 31,020.40

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Solution

The fourth proportional to 56,171.12, 77,516.12 and 31,020.40 is: 42,808.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,171.12 : 77,516.12 = 31,020.40 : x
  2. Step 2: Convert to fraction form
    56,171.12/77,516.12 = 31,020.40/x
  3. Step 3: Cross multiply
    56,171.12x = 77,516.12 × 31,020.40
  4. Step 4: Simplify right side
    56,171.12x = 2,404,581,048.85
  5. Step 5: Solve for x
    x = 2,404,581,048.85/56,171.12
  6. Step 6: Final answer
    x = 42,808.14

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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.