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Finding the Fourth Proportional to 78,980.95, 118,501.01 and 41,006.51

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Solution

The fourth proportional to 78,980.95, 118,501.01 and 41,006.51 is: 61,525.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,980.95 : 118,501.01 = 41,006.51 : x
  2. Step 2: Convert to fraction form
    78,980.95/118,501.01 = 41,006.51/x
  3. Step 3: Cross multiply
    78,980.95x = 118,501.01 × 41,006.51
  4. Step 4: Simplify right side
    78,980.95x = 4,859,312,851.58
  5. Step 5: Solve for x
    x = 4,859,312,851.58/78,980.95
  6. Step 6: Final answer
    x = 61,525.13

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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.