Home / 77,927.32-107,510.16-47,688.40

Finding the Fourth Proportional to 77,927.32, 107,510.16 and 47,688.40

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Solution

The fourth proportional to 77,927.32, 107,510.16 and 47,688.40 is: 65,791.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,927.32 : 107,510.16 = 47,688.40 : x
  2. Step 2: Convert to fraction form
    77,927.32/107,510.16 = 47,688.40/x
  3. Step 3: Cross multiply
    77,927.32x = 107,510.16 × 47,688.40
  4. Step 4: Simplify right side
    77,927.32x = 5,126,987,514.14
  5. Step 5: Solve for x
    x = 5,126,987,514.14/77,927.32
  6. Step 6: Final answer
    x = 65,791.91

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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.