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Finding the Fourth Proportional to 61,695.81, 92,597.71 and 30,129.20

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Solution

The fourth proportional to 61,695.81, 92,597.71 and 30,129.20 is: 45,220.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,695.81 : 92,597.71 = 30,129.20 : x
  2. Step 2: Convert to fraction form
    61,695.81/92,597.71 = 30,129.20/x
  3. Step 3: Cross multiply
    61,695.81x = 92,597.71 × 30,129.20
  4. Step 4: Simplify right side
    61,695.81x = 2,789,894,924.13
  5. Step 5: Solve for x
    x = 2,789,894,924.13/61,695.81
  6. Step 6: Final answer
    x = 45,220.17

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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.