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Finding the Fourth Proportional to 52,809.30, 72,878.53 and 28,937.50

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Solution

The fourth proportional to 52,809.30, 72,878.53 and 28,937.50 is: 39,934.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,809.30 : 72,878.53 = 28,937.50 : x
  2. Step 2: Convert to fraction form
    52,809.30/72,878.53 = 28,937.50/x
  3. Step 3: Cross multiply
    52,809.30x = 72,878.53 × 28,937.50
  4. Step 4: Simplify right side
    52,809.30x = 2,108,922,461.88
  5. Step 5: Solve for x
    x = 2,108,922,461.88/52,809.30
  6. Step 6: Final answer
    x = 39,934.68

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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.