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Finding the Fourth Proportional to 51,210.58, 70,670.88 and 28,551

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Solution

The fourth proportional to 51,210.58, 70,670.88 and 28,551 is: 39,400.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,210.58 : 70,670.88 = 28,551 : x
  2. Step 2: Convert to fraction form
    51,210.58/70,670.88 = 28,551/x
  3. Step 3: Cross multiply
    51,210.58x = 70,670.88 × 28,551
  4. Step 4: Simplify right side
    51,210.58x = 2,017,724,294.88
  5. Step 5: Solve for x
    x = 2,017,724,294.88/51,210.58
  6. Step 6: Final answer
    x = 39,400.54

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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.