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Finding the Fourth Proportional to 61,210.51, 84,389.30 and 39,952.87

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Solution

The fourth proportional to 61,210.51, 84,389.30 and 39,952.87 is: 55,081.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,210.51 : 84,389.30 = 39,952.87 : x
  2. Step 2: Convert to fraction form
    61,210.51/84,389.30 = 39,952.87/x
  3. Step 3: Cross multiply
    61,210.51x = 84,389.30 × 39,952.87
  4. Step 4: Simplify right side
    61,210.51x = 3,371,594,471.38
  5. Step 5: Solve for x
    x = 3,371,594,471.38/61,210.51
  6. Step 6: Final answer
    x = 55,081.96

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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.