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Finding the Fourth Proportional to 86,392.18, 119,220.69 and 48,678.58

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Solution

The fourth proportional to 86,392.18, 119,220.69 and 48,678.58 is: 67,176.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,392.18 : 119,220.69 = 48,678.58 : x
  2. Step 2: Convert to fraction form
    86,392.18/119,220.69 = 48,678.58/x
  3. Step 3: Cross multiply
    86,392.18x = 119,220.69 × 48,678.58
  4. Step 4: Simplify right side
    86,392.18x = 5,803,493,895.82
  5. Step 5: Solve for x
    x = 5,803,493,895.82/86,392.18
  6. Step 6: Final answer
    x = 67,176.15

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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.