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Finding the Fourth Proportional to 61,430.52, 92,145.71 and 19,314.28

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Solution

The fourth proportional to 61,430.52, 92,145.71 and 19,314.28 is: 28,971.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,430.52 : 92,145.71 = 19,314.28 : x
  2. Step 2: Convert to fraction form
    61,430.52/92,145.71 = 19,314.28/x
  3. Step 3: Cross multiply
    61,430.52x = 92,145.71 × 19,314.28
  4. Step 4: Simplify right side
    61,430.52x = 1,779,728,379.98
  5. Step 5: Solve for x
    x = 1,779,728,379.98/61,430.52
  6. Step 6: Final answer
    x = 28,971.40

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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.