Home / 86,434.16-129,700.44-69,014.70

Finding the Fourth Proportional to 86,434.16, 129,700.44 and 69,014.70

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Solution

The fourth proportional to 86,434.16, 129,700.44 and 69,014.70 is: 103,561.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,434.16 : 129,700.44 = 69,014.70 : x
  2. Step 2: Convert to fraction form
    86,434.16/129,700.44 = 69,014.70/x
  3. Step 3: Cross multiply
    86,434.16x = 129,700.44 × 69,014.70
  4. Step 4: Simplify right side
    86,434.16x = 8,951,236,956.47
  5. Step 5: Solve for x
    x = 8,951,236,956.47/86,434.16
  6. Step 6: Final answer
    x = 103,561.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.