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Finding the Fourth Proportional to 86,159.70, 118,898.82 and 47,919.06

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Solution

The fourth proportional to 86,159.70, 118,898.82 and 47,919.06 is: 66,127.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,159.70 : 118,898.82 = 47,919.06 : x
  2. Step 2: Convert to fraction form
    86,159.70/118,898.82 = 47,919.06/x
  3. Step 3: Cross multiply
    86,159.70x = 118,898.82 × 47,919.06
  4. Step 4: Simplify right side
    86,159.70x = 5,697,519,689.51
  5. Step 5: Solve for x
    x = 5,697,519,689.51/86,159.70
  6. Step 6: Final answer
    x = 66,127.43

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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.