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Finding the Fourth Proportional to 65,712.65, 90,683.54 and 35,497.98

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Solution

The fourth proportional to 65,712.65, 90,683.54 and 35,497.98 is: 48,987.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,712.65 : 90,683.54 = 35,497.98 : x
  2. Step 2: Convert to fraction form
    65,712.65/90,683.54 = 35,497.98/x
  3. Step 3: Cross multiply
    65,712.65x = 90,683.54 × 35,497.98
  4. Step 4: Simplify right side
    65,712.65x = 3,219,082,577.99
  5. Step 5: Solve for x
    x = 3,219,082,577.99/65,712.65
  6. Step 6: Final answer
    x = 48,987.26

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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.