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Finding the Fourth Proportional to 65,990.22, 90,944.40 and 46,870.86

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Solution

The fourth proportional to 65,990.22, 90,944.40 and 46,870.86 is: 64,595.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,990.22 : 90,944.40 = 46,870.86 : x
  2. Step 2: Convert to fraction form
    65,990.22/90,944.40 = 46,870.86/x
  3. Step 3: Cross multiply
    65,990.22x = 90,944.40 × 46,870.86
  4. Step 4: Simplify right side
    65,990.22x = 4,262,642,240.18
  5. Step 5: Solve for x
    x = 4,262,642,240.18/65,990.22
  6. Step 6: Final answer
    x = 64,595.06

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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.