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Finding the Fourth Proportional to 98,700.51, 148,063.74 and 51,955.95

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Solution

The fourth proportional to 98,700.51, 148,063.74 and 51,955.95 is: 77,940.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,700.51 : 148,063.74 = 51,955.95 : x
  2. Step 2: Convert to fraction form
    98,700.51/148,063.74 = 51,955.95/x
  3. Step 3: Cross multiply
    98,700.51x = 148,063.74 × 51,955.95
  4. Step 4: Simplify right side
    98,700.51x = 7,692,792,272.25
  5. Step 5: Solve for x
    x = 7,692,792,272.25/98,700.51
  6. Step 6: Final answer
    x = 77,940.76

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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.