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Finding the Fourth Proportional to 86,995.71, 130,543.79 and 47,014.83

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Solution

The fourth proportional to 86,995.71, 130,543.79 and 47,014.83 is: 70,549.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,995.71 : 130,543.79 = 47,014.83 : x
  2. Step 2: Convert to fraction form
    86,995.71/130,543.79 = 47,014.83/x
  3. Step 3: Cross multiply
    86,995.71x = 130,543.79 × 47,014.83
  4. Step 4: Simplify right side
    86,995.71x = 6,137,493,859.33
  5. Step 5: Solve for x
    x = 6,137,493,859.33/86,995.71
  6. Step 6: Final answer
    x = 70,549.39

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1.5x scale

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.