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Finding the Fourth Proportional to 65,804.68, 90,803.46 and 38,948.32

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Solution

The fourth proportional to 65,804.68, 90,803.46 and 38,948.32 is: 53,744.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,804.68 : 90,803.46 = 38,948.32 : x
  2. Step 2: Convert to fraction form
    65,804.68/90,803.46 = 38,948.32/x
  3. Step 3: Cross multiply
    65,804.68x = 90,803.46 × 38,948.32
  4. Step 4: Simplify right side
    65,804.68x = 3,536,642,217.19
  5. Step 5: Solve for x
    x = 3,536,642,217.19/65,804.68
  6. Step 6: Final answer
    x = 53,744.54

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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.