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Finding the Fourth Proportional to 86,700.60, 130,049.08 and 39,953.48

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Solution

The fourth proportional to 86,700.60, 130,049.08 and 39,953.48 is: 59,929.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,700.60 : 130,049.08 = 39,953.48 : x
  2. Step 2: Convert to fraction form
    86,700.60/130,049.08 = 39,953.48/x
  3. Step 3: Cross multiply
    86,700.60x = 130,049.08 × 39,953.48
  4. Step 4: Simplify right side
    86,700.60x = 5,195,912,566.67
  5. Step 5: Solve for x
    x = 5,195,912,566.67/86,700.60
  6. Step 6: Final answer
    x = 59,929.37

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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.