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Finding the Fourth Proportional to 86,678.70, 130,018.05 and 44,688.30

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Solution

The fourth proportional to 86,678.70, 130,018.05 and 44,688.30 is: 67,032.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,678.70 : 130,018.05 = 44,688.30 : x
  2. Step 2: Convert to fraction form
    86,678.70/130,018.05 = 44,688.30/x
  3. Step 3: Cross multiply
    86,678.70x = 130,018.05 × 44,688.30
  4. Step 4: Simplify right side
    86,678.70x = 5,810,285,623.82
  5. Step 5: Solve for x
    x = 5,810,285,623.82/86,678.70
  6. Step 6: Final answer
    x = 67,032.45

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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.