Home / 57,071.13-78,758.42-31,920.63

Finding the Fourth Proportional to 57,071.13, 78,758.42 and 31,920.63

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Solution

The fourth proportional to 57,071.13, 78,758.42 and 31,920.63 is: 44,050.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,071.13 : 78,758.42 = 31,920.63 : x
  2. Step 2: Convert to fraction form
    57,071.13/78,758.42 = 31,920.63/x
  3. Step 3: Cross multiply
    57,071.13x = 78,758.42 × 31,920.63
  4. Step 4: Simplify right side
    57,071.13x = 2,514,018,384.20
  5. Step 5: Solve for x
    x = 2,514,018,384.20/57,071.13
  6. Step 6: Final answer
    x = 44,050.62

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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.