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Finding the Fourth Proportional to 44,280.80, 66,421.20 and 28,534.40

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Solution

The fourth proportional to 44,280.80, 66,421.20 and 28,534.40 is: 42,801.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    44,280.80 : 66,421.20 = 28,534.40 : x
  2. Step 2: Convert to fraction form
    44,280.80/66,421.20 = 28,534.40/x
  3. Step 3: Cross multiply
    44,280.80x = 66,421.20 × 28,534.40
  4. Step 4: Simplify right side
    44,280.80x = 1,895,289,089.28
  5. Step 5: Solve for x
    x = 1,895,289,089.28/44,280.80
  6. Step 6: Final answer
    x = 42,801.60

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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.