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Finding the Fourth Proportional to 52,830.65, 72,906.80 and 28,957.79

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Solution

The fourth proportional to 52,830.65, 72,906.80 and 28,957.79 is: 39,962.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,830.65 : 72,906.80 = 28,957.79 : x
  2. Step 2: Convert to fraction form
    52,830.65/72,906.80 = 28,957.79/x
  3. Step 3: Cross multiply
    52,830.65x = 72,906.80 × 28,957.79
  4. Step 4: Simplify right side
    52,830.65x = 2,111,219,294.65
  5. Step 5: Solve for x
    x = 2,111,219,294.65/52,830.65
  6. Step 6: Final answer
    x = 39,962.02

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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.