Home / 77,886.19-107,412.37-51,018.90

Finding the Fourth Proportional to 77,886.19, 107,412.37 and 51,018.90

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Solution

The fourth proportional to 77,886.19, 107,412.37 and 51,018.90 is: 70,359.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,886.19 : 107,412.37 = 51,018.90 : x
  2. Step 2: Convert to fraction form
    77,886.19/107,412.37 = 51,018.90/x
  3. Step 3: Cross multiply
    77,886.19x = 107,412.37 × 51,018.90
  4. Step 4: Simplify right side
    77,886.19x = 5,480,060,963.79
  5. Step 5: Solve for x
    x = 5,480,060,963.79/77,886.19
  6. Step 6: Final answer
    x = 70,359.85

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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.