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Finding the Fourth Proportional to 52,703.79, 72,730.63 and 28,830.17

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Solution

The fourth proportional to 52,703.79, 72,730.63 and 28,830.17 is: 39,785.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,703.79 : 72,730.63 = 28,830.17 : x
  2. Step 2: Convert to fraction form
    52,703.79/72,730.63 = 28,830.17/x
  3. Step 3: Cross multiply
    52,703.79x = 72,730.63 × 28,830.17
  4. Step 4: Simplify right side
    52,703.79x = 2,096,836,427.11
  5. Step 5: Solve for x
    x = 2,096,836,427.11/52,703.79
  6. Step 6: Final answer
    x = 39,785.31

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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.