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Finding the Fourth Proportional to 61,406.10, 84,701.70 and 38,726.10

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Solution

The fourth proportional to 61,406.10, 84,701.70 and 38,726.10 is: 53,417.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,406.10 : 84,701.70 = 38,726.10 : x
  2. Step 2: Convert to fraction form
    61,406.10/84,701.70 = 38,726.10/x
  3. Step 3: Cross multiply
    61,406.10x = 84,701.70 × 38,726.10
  4. Step 4: Simplify right side
    61,406.10x = 3,280,166,504.37
  5. Step 5: Solve for x
    x = 3,280,166,504.37/61,406.10
  6. Step 6: Final answer
    x = 53,417.60

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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.