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Finding the Fourth Proportional to 172,368, 258,567.12 and 47,710.08

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Solution

The fourth proportional to 172,368, 258,567.12 and 47,710.08 is: 71,569.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,368 : 258,567.12 = 47,710.08 : x
  2. Step 2: Convert to fraction form
    172,368/258,567.12 = 47,710.08/x
  3. Step 3: Cross multiply
    172,368x = 258,567.12 × 47,710.08
  4. Step 4: Simplify right side
    172,368x = 12,336,257,980.57
  5. Step 5: Solve for x
    x = 12,336,257,980.57/172,368
  6. Step 6: Final answer
    x = 71,569.31

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.