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Finding the Fourth Proportional to 77,130.16, 115,672.52 and 34,985.86

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Solution

The fourth proportional to 77,130.16, 115,672.52 and 34,985.86 is: 52,468.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,130.16 : 115,672.52 = 34,985.86 : x
  2. Step 2: Convert to fraction form
    77,130.16/115,672.52 = 34,985.86/x
  3. Step 3: Cross multiply
    77,130.16x = 115,672.52 × 34,985.86
  4. Step 4: Simplify right side
    77,130.16x = 4,046,902,590.57
  5. Step 5: Solve for x
    x = 4,046,902,590.57/77,130.16
  6. Step 6: Final answer
    x = 52,468.48

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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.