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Finding the Fourth Proportional to 84,030.80, 117,730.60 and 84,030.80

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Solution

The fourth proportional to 84,030.80, 117,730.60 and 84,030.80 is: 117,730.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,030.80 : 117,730.60 = 84,030.80 : x
  2. Step 2: Convert to fraction form
    84,030.80/117,730.60 = 84,030.80/x
  3. Step 3: Cross multiply
    84,030.80x = 117,730.60 × 84,030.80
  4. Step 4: Simplify right side
    84,030.80x = 9,892,996,502.48
  5. Step 5: Solve for x
    x = 9,892,996,502.48/84,030.80
  6. Step 6: Final answer
    x = 117,730.60

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.