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Finding the Fourth Proportional to 86,053.30, 118,746.12 and 47,812.15

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Solution

The fourth proportional to 86,053.30, 118,746.12 and 47,812.15 is: 65,976.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,053.30 : 118,746.12 = 47,812.15 : x
  2. Step 2: Convert to fraction form
    86,053.30/118,746.12 = 47,812.15/x
  3. Step 3: Cross multiply
    86,053.30x = 118,746.12 × 47,812.15
  4. Step 4: Simplify right side
    86,053.30x = 5,677,507,301.36
  5. Step 5: Solve for x
    x = 5,677,507,301.36/86,053.30
  6. Step 6: Final answer
    x = 65,976.64

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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.