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Finding the Fourth Proportional to 84,854.48, 117,097.14 and 47,128.76

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Solution

The fourth proportional to 84,854.48, 117,097.14 and 47,128.76 is: 65,036.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,854.48 : 117,097.14 = 47,128.76 : x
  2. Step 2: Convert to fraction form
    84,854.48/117,097.14 = 47,128.76/x
  3. Step 3: Cross multiply
    84,854.48x = 117,097.14 × 47,128.76
  4. Step 4: Simplify right side
    84,854.48x = 5,518,643,007.75
  5. Step 5: Solve for x
    x = 5,518,643,007.75/84,854.48
  6. Step 6: Final answer
    x = 65,036.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.