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Finding the Fourth Proportional to 84,970.70, 117,262.56 and 48,678.62

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Solution

The fourth proportional to 84,970.70, 117,262.56 and 48,678.62 is: 67,178.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,970.70 : 117,262.56 = 48,678.62 : x
  2. Step 2: Convert to fraction form
    84,970.70/117,262.56 = 48,678.62/x
  3. Step 3: Cross multiply
    84,970.70x = 117,262.56 × 48,678.62
  4. Step 4: Simplify right side
    84,970.70x = 5,708,179,598.47
  5. Step 5: Solve for x
    x = 5,708,179,598.47/84,970.70
  6. Step 6: Final answer
    x = 67,178.21

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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.