Home / 42,822.40-64,233.60-21,827.20

Finding the Fourth Proportional to 42,822.40, 64,233.60 and 21,827.20

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Solution

The fourth proportional to 42,822.40, 64,233.60 and 21,827.20 is: 32,740.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,822.40 : 64,233.60 = 21,827.20 : x
  2. Step 2: Convert to fraction form
    42,822.40/64,233.60 = 21,827.20/x
  3. Step 3: Cross multiply
    42,822.40x = 64,233.60 × 21,827.20
  4. Step 4: Simplify right side
    42,822.40x = 1,402,039,633.92
  5. Step 5: Solve for x
    x = 1,402,039,633.92/42,822.40
  6. Step 6: Final answer
    x = 32,740.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.