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Finding the Fourth Proportional to 61,530.79, 84,910.08 and 34,678.75

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Solution

The fourth proportional to 61,530.79, 84,910.08 and 34,678.75 is: 47,855.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,530.79 : 84,910.08 = 34,678.75 : x
  2. Step 2: Convert to fraction form
    61,530.79/84,910.08 = 34,678.75/x
  3. Step 3: Cross multiply
    61,530.79x = 84,910.08 × 34,678.75
  4. Step 4: Simplify right side
    61,530.79x = 2,944,575,436.80
  5. Step 5: Solve for x
    x = 2,944,575,436.80/61,530.79
  6. Step 6: Final answer
    x = 47,855.32

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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.