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Finding the Fourth Proportional to 86,710.39, 119,657.82 and 48,470

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Solution

The fourth proportional to 86,710.39, 119,657.82 and 48,470 is: 66,887.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,710.39 : 119,657.82 = 48,470 : x
  2. Step 2: Convert to fraction form
    86,710.39/119,657.82 = 48,470/x
  3. Step 3: Cross multiply
    86,710.39x = 119,657.82 × 48,470
  4. Step 4: Simplify right side
    86,710.39x = 5,799,814,535.40
  5. Step 5: Solve for x
    x = 5,799,814,535.40/86,710.39
  6. Step 6: Final answer
    x = 66,887.19

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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.