Home / 61,981.20-92,971.80-57,704.40

Finding the Fourth Proportional to 61,981.20, 92,971.80 and 57,704.40

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Solution

The fourth proportional to 61,981.20, 92,971.80 and 57,704.40 is: 86,556.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,981.20 : 92,971.80 = 57,704.40 : x
  2. Step 2: Convert to fraction form
    61,981.20/92,971.80 = 57,704.40/x
  3. Step 3: Cross multiply
    61,981.20x = 92,971.80 × 57,704.40
  4. Step 4: Simplify right side
    61,981.20x = 5,364,881,935.92
  5. Step 5: Solve for x
    x = 5,364,881,935.92/61,981.20
  6. Step 6: Final answer
    x = 86,556.60

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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.