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Finding the Fourth Proportional to 84,774.32, 117,009.78 and 48,985.10

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Solution

The fourth proportional to 84,774.32, 117,009.78 and 48,985.10 is: 67,611.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,774.32 : 117,009.78 = 48,985.10 : x
  2. Step 2: Convert to fraction form
    84,774.32/117,009.78 = 48,985.10/x
  3. Step 3: Cross multiply
    84,774.32x = 117,009.78 × 48,985.10
  4. Step 4: Simplify right side
    84,774.32x = 5,731,735,774.28
  5. Step 5: Solve for x
    x = 5,731,735,774.28/84,774.32
  6. Step 6: Final answer
    x = 67,611.70

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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.