Home / 77,781.07-107,345.90-47,586.47

Finding the Fourth Proportional to 77,781.07, 107,345.90 and 47,586.47

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Solution

The fourth proportional to 77,781.07, 107,345.90 and 47,586.47 is: 65,674.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,781.07 : 107,345.90 = 47,586.47 : x
  2. Step 2: Convert to fraction form
    77,781.07/107,345.90 = 47,586.47/x
  3. Step 3: Cross multiply
    77,781.07x = 107,345.90 × 47,586.47
  4. Step 4: Simplify right side
    77,781.07x = 5,108,212,032.21
  5. Step 5: Solve for x
    x = 5,108,212,032.21/77,781.07
  6. Step 6: Final answer
    x = 65,674.23

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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.