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Finding the Fourth Proportional to 57,890.40, 79,888.32 and 32,740.80

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Solution

The fourth proportional to 57,890.40, 79,888.32 and 32,740.80 is: 45,182.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,890.40 : 79,888.32 = 32,740.80 : x
  2. Step 2: Convert to fraction form
    57,890.40/79,888.32 = 32,740.80/x
  3. Step 3: Cross multiply
    57,890.40x = 79,888.32 × 32,740.80
  4. Step 4: Simplify right side
    57,890.40x = 2,615,607,507.46
  5. Step 5: Solve for x
    x = 2,615,607,507.46/57,890.40
  6. Step 6: Final answer
    x = 45,182.06

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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.