Home / 56,981.07-78,632.91-31,487.40

Finding the Fourth Proportional to 56,981.07, 78,632.91 and 31,487.40

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Solution

The fourth proportional to 56,981.07, 78,632.91 and 31,487.40 is: 43,452.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,981.07 : 78,632.91 = 31,487.40 : x
  2. Step 2: Convert to fraction form
    56,981.07/78,632.91 = 31,487.40/x
  3. Step 3: Cross multiply
    56,981.07x = 78,632.91 × 31,487.40
  4. Step 4: Simplify right side
    56,981.07x = 2,475,945,890.33
  5. Step 5: Solve for x
    x = 2,475,945,890.33/56,981.07
  6. Step 6: Final answer
    x = 43,452.08

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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.