Home / 56,807.28-78,397.47-31,313.61

Finding the Fourth Proportional to 56,807.28, 78,397.47 and 31,313.61

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Solution

The fourth proportional to 56,807.28, 78,397.47 and 31,313.61 is: 43,214.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,807.28 : 78,397.47 = 31,313.61 : x
  2. Step 2: Convert to fraction form
    56,807.28/78,397.47 = 31,313.61/x
  3. Step 3: Cross multiply
    56,807.28x = 78,397.47 × 31,313.61
  4. Step 4: Simplify right side
    56,807.28x = 2,454,907,800.57
  5. Step 5: Solve for x
    x = 2,454,907,800.57/56,807.28
  6. Step 6: Final answer
    x = 43,214.67

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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.