Home / 42,800.30-64,200.45-11,210.30

Finding the Fourth Proportional to 42,800.30, 64,200.45 and 11,210.30

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Solution

The fourth proportional to 42,800.30, 64,200.45 and 11,210.30 is: 16,815.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,800.30 : 64,200.45 = 11,210.30 : x
  2. Step 2: Convert to fraction form
    42,800.30/64,200.45 = 11,210.30/x
  3. Step 3: Cross multiply
    42,800.30x = 64,200.45 × 11,210.30
  4. Step 4: Simplify right side
    42,800.30x = 719,706,304.64
  5. Step 5: Solve for x
    x = 719,706,304.64/42,800.30
  6. Step 6: Final answer
    x = 16,815.45

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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.