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Finding the Fourth Proportional to 84,930.72, 117,001.80 and 59,389.32

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Solution

The fourth proportional to 84,930.72, 117,001.80 and 59,389.32 is: 81,815.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,930.72 : 117,001.80 = 59,389.32 : x
  2. Step 2: Convert to fraction form
    84,930.72/117,001.80 = 59,389.32/x
  3. Step 3: Cross multiply
    84,930.72x = 117,001.80 × 59,389.32
  4. Step 4: Simplify right side
    84,930.72x = 6,948,657,340.78
  5. Step 5: Solve for x
    x = 6,948,657,340.78/84,930.72
  6. Step 6: Final answer
    x = 81,815.59

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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.