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Finding the Fourth Proportional to 84,878.52, 117,064.80 and 54,666.36

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Solution

The fourth proportional to 84,878.52, 117,064.80 and 54,666.36 is: 75,396.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,878.52 : 117,064.80 = 54,666.36 : x
  2. Step 2: Convert to fraction form
    84,878.52/117,064.80 = 54,666.36/x
  3. Step 3: Cross multiply
    84,878.52x = 117,064.80 × 54,666.36
  4. Step 4: Simplify right side
    84,878.52x = 6,399,506,500.13
  5. Step 5: Solve for x
    x = 6,399,506,500.13/84,878.52
  6. Step 6: Final answer
    x = 75,396.07

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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.