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Finding the Fourth Proportional to 52,751.90, 72,798.91 and 28,878.50

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Solution

The fourth proportional to 52,751.90, 72,798.91 and 28,878.50 is: 39,853.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,751.90 : 72,798.91 = 28,878.50 : x
  2. Step 2: Convert to fraction form
    52,751.90/72,798.91 = 28,878.50/x
  3. Step 3: Cross multiply
    52,751.90x = 72,798.91 × 28,878.50
  4. Step 4: Simplify right side
    52,751.90x = 2,102,323,432.24
  5. Step 5: Solve for x
    x = 2,102,323,432.24/52,751.90
  6. Step 6: Final answer
    x = 39,853.04

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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.