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Finding the Fourth Proportional to 65,809.51, 90,817.02 and 37,129.13

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Solution

The fourth proportional to 65,809.51, 90,817.02 and 37,129.13 is: 51,238.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,809.51 : 90,817.02 = 37,129.13 : x
  2. Step 2: Convert to fraction form
    65,809.51/90,817.02 = 37,129.13/x
  3. Step 3: Cross multiply
    65,809.51x = 90,817.02 × 37,129.13
  4. Step 4: Simplify right side
    65,809.51x = 3,371,956,487.71
  5. Step 5: Solve for x
    x = 3,371,956,487.71/65,809.51
  6. Step 6: Final answer
    x = 51,238.14

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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.